Manual transmission oil - how to make the right choice


Every owner of a car with a manual transmission is interested in what kind of oil is poured into a manual transmission. Transmission oil provides lubrication to all gearbox parts and lowers the temperature inside this unit. Also, it is the gearbox oil that helps remove abrasive particles and various debris from the transmission, reducing the likelihood of breakdown and the risk of corrosion. But a certain type of gearbox requires a certain oil, since the wrong choice of lubricant can lead to transmission failure.

Functional purpose of mechanical lubricant


The role of the lubricating fluid for the gearbox is very important; it ensures long operation and prevents premature wear of parts inside the unit.
Each manual transmission contains a large number of different gears and gear parts that actively interact with each other. Also in a mechanical unit, shafts and various bearings are in constant operation. All these parts without high-quality lubricant will quickly become unusable due to wear and tear and will cease to function properly. The quality of lubrication is important not only because of the safety of dynamic parts inside the gearbox. It is high-quality products that allow you to control the temperature inside the box, effectively remove dirt and various impurities, cleaning the metal surfaces of parts from them. Lubricant performs many different functions, so it is important to choose a quality product. But which one is better for the transmission? What is better to buy, synthetic or mineral lubricant? Every car owner needs to understand these and other questions.

Features of selecting transmission oil for “mechanics”

So, the question of selecting oil for a manual transmission in practice is not as simple as it might seem at first glance. First of all, the transmission is subject to serious loads during vehicle operation.

It is important to understand that the oil in the gearbox lubricates the gearbox elements, protecting parts from mechanical wear. Another function is to remove wear products and contaminants, protect against corrosion, ensure softness and smooth operation of the unit, etc.

During operation of a mechanical gearbox, gears, shafts, bearings and other components come into contact with each other, friction forces act on the mating surfaces, and shock loads occur. It should also be noted that the parts inside the gearbox are subject to a certain amount of heat.

At the same time, the supply of oil to bearings, gears and other elements on manual transmissions is usually not forced. This means that some parts are simply immersed in an oil bath, while others receive lubricant as a result of splashing. The exception is equipment where extremely high loads on the transmission are expected. In such boxes, oil is forced into the gearbox under pressure.

In any case, taking into account the loads and operating conditions, the gear oil must have certain properties and characteristics. In simple words, gearbox oil is an oil base and a package of special additives to increase the service life of the lubricant, maintain the necessary properties, etc.

Types of transmission fluids

All lubricants for manual transmissions are divided according to the degree of viscosity, performance properties and the type of base from which they are made. It is the last division based on the type of base that predetermines the choice of gear oil among most car enthusiasts. They are divided into three types of bases: mineral, semi-synthetic and synthetic.

Mineral transmission lubricants for manual transmissions are the most popular on the Russian market. This is primarily due to the fact that the price of lubricants with a mineral base is lower than other types of oils. Mineral lubricants are inferior in properties to synthetic transmission and semi-synthetic oil fluids.

Semi-synthetic lubricants are more effective than mineral lubricants, but their properties are inferior to synthetics. When choosing how to choose gear oil for a manual transmission, it is best to focus on synthetic lubricants, and not the “cheapest” analogues.

The rating of transmission oils for manual transmissions is headed by synthetic lubricants. But they have a higher price than their semi-synthetic and mineral counterparts. The best properties of gear oil for manual transmissions are found in synthetic-based products.

Which oil is better to fill in a manual transmission: a brief overview of manufacturers

Let's look at several popular manufacturers of gear oils.

  1. "Lukoil". Maintains a reputation in the Russian market for inexpensive and high-quality lubricants and is famous for the absence of counterfeits. Lukoil transmission oils are perfect for almost all gearboxes of domestic cars and unloaded manual transmissions of foreign cars.
  2. Mobil. Expensive oils for manual transmissions that require lubrication. Suitable for drivers with an aggressive driving style. Almost the entire line of Mobil transmission oils has an increased oil film strength and extended service life.
  3. ZIC. Golden mean. Worldwide recognized quality from the Korean oil refining giant SK Energy. Technological oil at an affordable price.

In the TopDetal.ru online store you can always buy original gear oils from the world's leading manufacturers at an affordable price. Just open the catalog and make sure: our prices are lower than the market average.

Division of oils for manual transmissions by viscosity degree

Lubricants for manual transmissions are divided not only according to the manufacturing method, but also according to the SAE viscosity standard. Thanks to this parameter, you can decide on the transmission oil at certain times of the year. Unlike the API marking, SAE viscosity grades divide all lubricants into winter and summer.

For winter operation of a car with a manual transmission, compositions of the following types are used: 5W, 10W, 20W and others. It is the English letter W that determines the season in which it is recommended to use the lubricant.

The oil in a manual transmission should be changed when the season changes. Summer lubricants include the following SAE fluids without the distinctive letter “W”, for example, the following: 10, 15, 25, 30, 45 and others.

There are also all-season lubricants for mechanics, they look like this: 5W-40, 0W-30, 10W-50. Such compounds need to be replaced only when the oil level in the manual transmission drops, and not when the season changes.

For automatic transmission

In automatic transmissions, the loads are distributed slightly differently compared to previous types of transmissions, so the lubrication for them must be different. In this case, the canister will have the corresponding marking - ATF (the most common for most automatic machines).

In fact, these liquids have similar characteristics as the previous ones - extreme pressure, anti-corrosion, cooling. But for the lubrication of automatic machines, the requirements for viscosity-temperature characteristics are more stringent.

There are different types of automatic transmissions, and for each of them, manufacturers strictly regulate the use of a specific oil. The following modifications are distinguished:

  • Gearbox with torque converter. The lubricant in such transmissions additionally plays the role of hydraulic fluid, so the requirements for it are more stringent - especially with regard to its fluidity.
  • CVT. There is also a separate oil for these types of transmissions. The canisters of these products will be marked CVT.
  • Robot box. It operates on the principle of a mechanical analogue, only in this case the clutch and gear shift are controlled by an electronic control unit.
  • Double clutch transmission. Today there are many modifications of such devices. When creating their “unique” transmission, manufacturers impose strict requirements on the use of lubricant. If the car owner ignores these instructions, then in most cases the car will be removed from warranty.

Since oils for such transmissions have an “individual” composition (as manufacturers claim), they cannot be classified according to API or ACEA in order to select an analogue. In this case, it would be better to listen to the manufacturer’s recommendations and buy the one indicated in the technical documentation.

Division of oils according to their performance qualities

In addition to separation by viscosity by SAE classification, API markings can be found on lubricant bottles. It will divide oil liquids according to performance properties and quality:

  • GL-1 – mineral lubricant without additives;
  • GL-2 – lubricant with high fat content;
  • GL-3 – oil fluid with anti-scuff additives;
  • GL-4 – composition with a complex of additives against wear and scuffing;
  • GL-5 – lubricant with a wider range of additives than GL-4;

API classification helps to understand the performance capabilities of a lubricant product.

The brand of oil is not fundamental when choosing it; what is more important here is its API performance quality. Typically, both small and giant brands make lubricant products with the same level of quality. The main thing is to avoid fakes.

Storage rules

The last thing that needs to be mentioned are a few rules for storing open oil:

  • The shelf life of gear oil is usually 3-5 years. See the packaging for more details. It is not recommended to use expired lubricant, as its protective properties can be significantly reduced.
  • The shelf life of gear oil must be calculated not from the date of spill, but from the moment the package is uncorked. However, before opening, the lubricant must be stored under the correct conditions, otherwise it may deteriorate even before opening the package.
  • After opening, the lubricant should be stored in its original packaging or canister. Metal and plastic containers should be avoided.
  • It should be stored in a dark place (avoid direct sunlight), a cool room is optimal. But you should avoid frost.

Do not neglect these rules to avoid damage to the lubricant.

Some general rules for changing gearbox oils

Before purchasing a lubricant for your car’s gearbox, you need to carefully study the instructions for the car. Usually it indicates which manual transmission oil according to API and SAE is recommended for use in a particular unit. Also, the operating instructions for the passenger car indicate the frequency of replacing the lubricant in the box.

If you do not know when to change the oil in the gearbox, first study the lubricant by carefully inspecting it visually. If particles of wear products are visible in it, it has become dark or smells like burning, then the gearbox clearly needs fresh lubricant. Experts recommend doing a visual inspection of the lubricant every 10-20 thousand kilometers. For cars with high mileage, this figure is slightly lower: 5-10 thousand kilometers.

High temperatures inside the gearbox cause the surface of system parts to become more susceptible to damage, so it is recommended to select a lubricant according to the vehicle manual. The manufacturer independently measured the loads the box was subjected to and determined the appropriate product based on the API marking.

Oil change: should it be changed, after how long to change it, how many liters

Owners of some expensive cars, fortunately, do not have to change the oil in the gearbox. Because the service life of the automatic transmission in such cars coincides with the service life of the gear oil. Such boxes do not even have a dipstick to determine the oil level in the automatic transmission.

List of cars in which the transmission oil does not need to be changed:

  1. German cars after 1990 do not have a dipstick in the gearbox.
  2. FORD MONDEO / FORD MONDEO with AUTOMATIC FMX gearbox.
  3. HONDA CR-V / Honda SRV new generation.
  4. ACURA RL with MJBA AUTOMATIC gearbox.

But, owners of ordinary middle-class cars need to know that the oil in an automatic transmission, under ideal conditions, must be changed every 80 thousand km, which on average is equal to a mileage of 2 years. And in the conditions of ordinary city life with different climates, different types of driving, etc., it is recommended to change it every 25 thousand km. mileage

If you are going to change the oil in the box yourself, then first you need to look at the repair and operating instructions for a specific make and model of car, because there are some nuances.

If there are extraneous noises in the box that were not there before, then before changing the oil, it is necessary to make a diagnosis.

Before replacing, find a container to drain the old oil, unscrew the drain bolt in the crankcase pan.

It is not recommended to mix different oils, even if they are in the same manufacturer category.

How many liters of oil are needed for a complete and partial change in an AUTOMATIC gearbox (in the table only TOYOTA cars)

ModelOf the yearCylindersMotorAutomatic transmissionComplete oil change, lPartial oil change, lOEM oil typeOil analogue
88-94L4, V62.4, 3LA340H10,34,5Dexron III, VI / Mercon V
4-Runner
89-95V64LA340E/F7,21,6Dexron III, VI / Mercon V
96-02V6, V84.0,4.7LA340E/F7,2-9,81,6-2,0Toyota Type T-IVDexron III, VI / Mercon V
03-05V6, V84.0,4.7LA340F12,32,0Toyota Type T-IVDexron III, VI / Mercon V
04-08V6, V84.0,4.7LA750E/F5,33,0Toyota Type WSDexron VI
Avalon95-98V63LA541E8,03,5Dexron III, VI / Mercon V
99-02V63LA541E8,04,7Dexron III, VI / Mercon V
03-07V63LA541E8,04,7Toyota Type T-IVDexron III, VI / Mercon V
05-08V63LU151E8,83,5Toyota Type WSDexron VI
Camry03-07V63LA541E8,04,7Toyota Type T-IVDexron III, VI / Mercon V
02-07V63LU140E9,24,1Toyota Type T-IVDexron III, VI / Mercon V
86-02L41.8, 2.0, 2.2LA140E,L5,62,5Dexron III, VI / Mercon V
88-93V63LA540-E5,92,5Dexron III, VI / Mercon V
90-91V63LA540-H7,03,3Toyota Type T-IVDexron III, VI / Mercon V
94-98V63LA541E8,03,5Dexron III, VI / Mercon V
99-02V63LA541E8,04,7Dexron III, VI / Mercon V
02-04L42.4LU241E8,23,5Toyota Type T-IVDexron III, VI / Mercon V
05L42.4LU250E8,23,5Toyota Type T-IVDexron III, VI / Mercon V
04-06V63.3LU151E8,83,5Toyota Type T-IVDexron III, VI / Mercon V
07-08L4, V62.4, 3.3LU660E6,52,8Toyota Type WSDexron VI
Celica00-05L41.8LU240E,U341E7,6-6,97,6Toyota Type T-IVDexron III, VI / Mercon V
00-05L41.8LU240E,U341E4-2,94-2,9Toyota Type T-IVDexron III, VI / Mercon V
81-83L42.4LA40D6,32,4Type F ATF
84-85L42.4LA40D6,32,4Dexron III, VI / Mercon V
86-89L42LA140E,L6,02,5Dexron III, VI / Mercon V
Celica GT90-93L42LA243L8,23,3Dexron III, VI / Mercon V
94-99L42LA140E5,63,3Dexron III, VI / Mercon V
00-05L42.2LU341E6,82,9Toyota Type T-IVDexron III, VI / Mercon V
Celica GTS90-93L42.2LA241E8,23,3Dexron III, VI / Mercon V
00-05L42.4LU240E6,82,9Toyota Type T-IVDexron III, VI / Mercon V
Celica ST90-93L42.2LA241L8,03,3Dexron III, VI / Mercon V
94-99L42.2LA246E7,62,4Dexron III, VI / Mercon V
Corolla84-01L41.6, 1.8LA131L5,92,4Dexron III, VI / Mercon V
84-85L41.8L dieselA130L5,52,4Dexron III, VI / Mercon V
84-87L41.6LA42DL6,52,4Dexron III, VI / Mercon V
85-92L41.6LA240L7,23,1Dexron III, VI / Mercon V
85-92L41.6LA240E7,23,1Dexron III, VI / Mercon V
90-92L41.6LA241H7,23,1Dexron III, VI / Mercon V
93-05L41.6, 1.8LA245E7,63,1Toyota Type T-IVDexron III, VI / Mercon V
05-08L41.8LU341F2,9Toyota Type T-IVDexron III, VI / Mercon V
Cressida83L62.8LA43DE6,52,4Type F ATF
84-86L 62.8LA43DE6,52,4Dexron III, VI / Mercon V
87-92L 62.8, 3LA340E7,21,9Dexron III, VI / Mercon V
Echo00-03L41.5LU340E,U341E8,02,9Toyota Type T-IVDexron III, VI / Mercon V
03-07L41.5LU340E,U341E6,82,9Toyota Type T-IVDexron III, VI / Mercon V
FJ Cruiser07-08V64LA750E/F5,33,0Toyota Type WSDexron VI
Highlander01-04L4, V62.4, 3.3LU140F8,33,3Toyota Type T-IVDexron III, VI / Mercon V
02-06L42.4LU241E8,23,5Toyota Type T-IVDexron III, VI / Mercon V
01-04V63LU140E, U140F9,03,9Toyota Type T-IVDexron III, VI / Mercon V
04-08V63.3LU151E,U151F9,03,9Toyota Type T-IVDexron III, VI / Mercon V
Highlander/Hybrid05-08V63.3LECVT3,5CVT (VTF)
Land Cruiser88-94L62.5LA440F15,06,0Dexron III, VI / Mercon V
93-95I 62.5LA442F15,06,0Dexron III, VI / Mercon V
95-97V84.7LA340F11,01,9Dexron III, VI / Mercon V
98-00V84.7LA343F11,73,5Dexron III, VI / Mercon V
01-02V84.7LA343F11,72,0Dexron III, VI / Mercon V
03V84.7LA750F5,43,0Toyota Type T-IVDexron III, VI / Mercon V
04-07V84.7LA750F5,43,0Toyota Type WSDexron VI
08V84.7LA750F10,43,0Toyota Type WSDexron VI
Matrix03-05L41.8LU341E2,1Toyota Type T-IVDexron III, VI / Mercon V
03-05L41.8LA246E7,33,0Toyota Type T-IVDexron III, VI / Mercon V
03-05L41.8HOU240E6,83,1Toyota Type T-IVDexron III, VI / Mercon V
03-08L41.8LMU4, MU57,23,1Toyota Type T-IVDexron III, VI / Mercon V
MR 286L41.6LA140E5,62,6Dexron III, VI / Mercon V
89-95L42.2LA241E7,23,1Dexron III, VI / Mercon V
MR 387-88L41.6LA240E7,23,1Dexron III, VI / Mercon V
MR488-89L41.6L superchgA241E7,93,1Dexron III, VI / Mercon V
Paseo92-98L41.5LA244E8,23,3Dexron III, VI / Mercon V
Pickup82-84L42.4LA43D6,52,4Dexron III, VI / Mercon V
85-89L42.4L TurboA340E7,21,9Dexron III, VI / Mercon V
85-89L42.4LA340H10,34,5Dexron III, VI / Mercon V
85-89V63LA340H10,34,5Dexron III, VI / Mercon V
90-94L42.4LA340F7,61,9Dexron III, VI / Mercon V
90-94V63LA340H10,34,5Dexron III, VI / Mercon V
Pickup (T100)93-98L42.7LA340E7,21,9Dexron III, VI / Mercon V
93-98V63.0, 3.4LA340E7,21,9Dexron III, VI / Mercon V
93-98L42.7LA340F7,61,9Dexron III, VI / Mercon V
93-98V63.0, 3.4LA340F7,61,9Dexron III, VI / Mercon V
Pickup, Tacoma85-97L42.4LA43D6,52,4Dexron III, VI / Mercon V
89-02L42.4LA340E7,21,9Dexron III, VI / Mercon V
89-02V63.0, 3.4LA340E7,21,9Dexron III, VI / Mercon V
95-04L42.7LA43D6,52,4Dexron III, VI / Mercon V
95-04V63.4LA340F9,82,0Dexron III, VI / Mercon V
04-05L42.4LA44D6,52,4Dexron III, VI / Mercon V
04V84.7LA340F10,12,0Dexron III, VI / Mercon V
05-07V63.4LA340E12,32,0Toyota Type T-IVDexron III, VI / Mercon V
05-07V84.7LA750E/F5,33,0Toyota Type WSDexron VI
Previa91-97L42.4LA46DE5,72,4Dexron III, VI / Mercon V
93-97L42.4L SChgA340E7,21,9Dexron III, VI / Mercon V
93-97L42.4L SChgA340F7,61,9Dexron III, VI / Mercon V
Prius01-03L41.5LECVT4,6CVT (VTF)
04-07L41.5LECVT3,6CVT (VTF)
RAV496-97L42LA241E8,03,3Dexron III, VI / Mercon V
96-99L42LA540H7,03,3Dexron III, VI / Mercon V
98-99L42LA247E8,23,3Dexron III, VI / Mercon V
01-05L42LU140E/F8,33,5Toyota Type T-IVDexron III, VI / Mercon V
06-07L42LU140E/F8,33,5Toyota Type WSDexron VI
01-05L42.4LU241E8,63,5Toyota Type T-IVDexron III, VI / Mercon V
06-08L42.0, 2.4LU140F, U241E8,13,5Toyota Type WSDexron VI
Sequoia00-04V84.7LA340F9,82,0Dexron III, VI / Mercon V
00-04V63.4LA340E10,12,0Toyota Type T-IVDexron III, VI / Mercon V
00-04V84.7LA340E12,32,0Toyota Type T-IVDexron III, VI / Mercon V
00-04V63.4LA340F10,12,0Toyota Type T-IVDexron III, VI / Mercon V
00-04V84.7LA340F12,32,0Toyota Type T-IVDexron III, VI / Mercon V
05-07V6, V83.4, 4.7LA750E, A750F5,43,0Toyota Type WSDexron VI
Sienna98-00V63LA540E/F8,03,5Dexron III, VI / Mercon V
01-03V63LA541E8,04,7Toyota Type T-IVDexron III, VI / Mercon V
04-06V63.3LU151E/F9,03,6Toyota Type T-IVDexron III, VI / Mercon V
07-08V63.3LU151E/F8,33,5Toyota Type WSDexron VI
Solara98-01V63LA140E8,03,5Dexron III, VI / Mercon V
02-03V63LA541E7,84,7Toyota Type T-IVDexron III, VI / Mercon V
98-01L42.2LA140E/L2,5Dexron III, VI / Mercon V
98-03V63LA541E8,04,7Dexron III, VI / Mercon V
02-05L42.4LU241E8,23,5Toyota Type T-IVDexron III, VI / Mercon V
06V63LU250E8,23,5Toyota Type T-IVDexron III, VI / Mercon V
04-06V63.3LU151E8,83,5Toyota Type T-IVDexron III, VI / Mercon V
07-08L42.4LU250E8,03,5Toyota Type WSDexron VI
07-08V63.3LU660E6,52,8Toyota Type WSDexron VI
Supra83L62.8LA43DE6,32,4Type F ATF
84-85L62.8LA43DE6,32,4Dexron III, VI / Mercon V
86-92L63LA340E7,21,9Dexron III, VI / Mercon V
93-98L63LA340E7,21,9Toyota Type T-IVDexron III, VI / Mercon V
93-98L63L TurboA340E8,21,9Toyota Type T-IVDexron III, VI / Mercon V
Tacoma95-96L42.4LA340F9,82,0Toyota Type T-IVDexron III, VI / Mercon V
95-00L42.4LA43D6,52,4Dexron III, VI / Mercon V
95-02L4, V62.4, 3.0, 3.4LA340E7,21,6Toyota Type T-IVDexron III, VI / Mercon V
97-04L4, V62.4, 3.0, 3.4LA340F10,12,0Dexron III, VI / Mercon V
03-07L4, V62.4, 3.0, 3.4LA340E7,21,6Toyota Type T-IVDexron III, VI / Mercon V
05-08L4, V62.4, 3.0, 3.4LA340E12,32,0Toyota Type T-IVDexron III, VI / Mercon V
05-08V63.4LA750E, A750F10,93,0Toyota Type WSDexron VI
Tercel87L41.5L 3E EngineA132L5,62,5Dexron III, VI / Mercon V
87L41.5L 3A-C EngineA556,54,2Dexron III, VI / Mercon V
88-99L41.5LA132L5,62,5Dexron III, VI / Mercon V
95-99L41.5LA242L7,23,1Dexron III, VI / Mercon V
Tundra00-04V63.4LA340E7,21,6Dexron III, VI / Mercon V
00-04V84.7LA340F9,82,0Dexron III, VI / Mercon V
00-04V63.4LA340E10,12,0Toyota Type T-IVDexron III, VI / Mercon V
00-04V84.7LA340E12,32,0Toyota Type T-IVDexron III, VI / Mercon V
00-04V63.4LA340F10,12,0Toyota Type T-IVDexron III, VI / Mercon V
00-04V84.7LA340F12,32,0Toyota Type T-IVDexron III, VI / Mercon V
05-08V6, V83.4, 4.7LA750E, A750F10,93,0Toyota Type WSDexron VI
Van84-89L42.0, 2.2LA44DL6,52,4Dexron III, VI / Mercon V
Yaris06-08L41.5LU340E, U341E6,82,9Toyota Type WSDexron VI

For 1G-FE engines, a complete replacement in an automatic transmission will require from 8 to 12 liters. For boxes of other cars, find out in the owner's manual or on the Internet.

This video shows the procedure for changing oil in a manual transmission.

Recommended gearbox oil: manual transmission

Gearbox lubricant is divided into classifications that allow you to determine whether it is suitable for a manual or automatic transmission. Typically, the car manufacturer recommends lubricant, indicating in its instructions which product is most effective for a given gearbox. But you can choose the oil fluid yourself if you understand the SAE and API classifications.

Since the parts in a manual transmission are subject to increased loads, units of this type require lubricants with a complex of anti-wear additives. According to API classification, these are GL-4 and GL-5 lubricants. They are considered the best for manual transmissions. But often the manufacturer recommends pouring oil into the gearbox that is thicker than regular synthetic oil, namely GL-3. In any case, when choosing which motor oil is best for your car, you need to focus primarily on the vehicle’s manual.

The service life of the transmission and the reliability of its operation directly depend on the frequency of oil changes and its quality. Many people rely on service stations and purchase the lubricant that a car mechanic pours into the mechanics, but it should be understood that many auto mechanics save money, to the detriment of their clients. Therefore, it is recommended to choose a lubricant yourself and provide it to a mechanic to replace it in the car. Do not forget that you need to change the oil every 30 thousand kilometers and replace it in a timely manner to avoid problems with the gearbox. To understand why it is necessary to fill a gearbox with a mechanical gearshift system with this or a certain oil, you must first understand the differences between oils for automatic transmissions and manual transmissions.

Comparison table of characteristics

To compare the selected oil models, we will use a comparison table.

TypeMin. t °С, Max. t °С, according to SAEvia API
Luxe 80W-90 GL-5mineral-40+15080W90GL-5
Castrol Syntrans Transaxle 75W90synthetics-54+15075W90GL-4+
Lukoil GL-5 75W90semi-synthetic-40+19075W90GL-5
Total Trans SYN FE 75W90semi-synthetic-51+19075W90GL-5
Liqui Moly Hypoid-Getriebeoil TDLsemi-synthetic-40+17075W90GL-4/5
Total 75W80 BVmineral-45+20075W80GL-4+
Zic GF TOP 75W-90synthetics-45+23075W90GL-4/5

What is the difference between manual transmission oils and automatic transmission fluids?

The operating principle of an automatic transmission is different from a manual one. The mechanics use a torque transmission system using gears, which significantly increases the wear of parts in the unit. This is precisely why manufacturers recommend filling manual transmissions with additives against wear and corrosion: GL-3, GL-4, GL-5. In automation, the main role is played by the hydroconvector, so hydraulic oil is used for it.

If you do not know what oil to pour into your manual transmission, then it is better to turn to the manufacturer’s manual for help. The vehicle manual contains all the necessary information about what lubricant should be used in the gearbox of your car. It also indicates how much oil can be placed in the gearbox and where the hole for changing it is located.

What's the result?

Taking into account the above, it becomes clear that you need to select the best gearbox oil, first of all, taking into account the recommendations of the car manufacturer itself. Then you need to determine what viscosity will be optimal, taking into account the operating characteristics of the vehicle.

For this reason, trying to fill in oil with a high viscosity index in order to eliminate noise in the gearbox is not always the right decision. In this case, it is better to pay attention to special additives in the gearbox or immediately begin repairing the gearbox.

Sources

  • https://gadgetok.ru/top-15-luchshih-transmissionnyh-masel.html
  • https://www.rmasla.ru/articles/transmission-oil/
  • https://AvtoTachki.com/maslo-dlya-korobki-peredach/
  • https://avto-moto-shtuchki.ru/avtotekhnika/58-avtomobilnye-masla-ih-klassifikacija.html
  • https://maslo.expert/vyazkost/transmisionnoe-maslo-75w-90.html
  • https://infomasla.ru/transmission-oil/transmissionnoe-maslo-kakoe-byvaet-i-kak-pravilno-podobrat
  • https://vyborexperta.ru/avtomoto/luchshie-transmissionnye-masla/
  • https://vyboroved.ru/reyting/luchshie-transmissionnye-masla
  • https://OXSY.ru/7-luchshih-transmissionnyh-masel/
  • https://rad-star.ru/pressroom/articles/marki-transmissionnykh-masel/
  • https://KrutiMotor.ru/podbor-transmiscionnogo-masla-kpp/

Igogo :).

To summarize everything written above, I will highlight the main points:

  • Be sure to look at what the car manufacturer recommends and thoughtfully analyze the adequacy of the recommendations to common sense, based on the following conclusions.
  • In the vast majority of cases, the optimal viscosity for manual transmission oil will be 75W-90, which has sufficient viscosity at operating temperature and does not thicken much in winter.
  • For front-wheel drive vehicles, GL-4 level oil is quite sufficient for performance indicators. But GL-5 is most often contraindicated, or at least undesirable in the name of preserving the synchronizers.
  • For rear-wheel drive cars, manual transmission oil is also suitable for GL-4 for exactly the same reasons (there are no hypoid joints, there are non-ferrous metal synchrons). The manufacturer's GL-5 recommendation either calls for synchronizers made of a different material (steel with a molybdenum coating, for example, in luxury cars), or follows a controlled wear paradigm (or deliberately degrades the product in order to increase future sales of new products).
  • The same goes for all-wheel drive vehicles. In the GL-4 box, since, as a rule, it is no different from rear- and front-wheel drive manual transmissions. At least in terms of manufacturing materials and the operating principle of synchronizers. We also look at the manufacturer’s recommendations and figure out how justified the GL-5 approval is, if it happens to be there.
  • Universal oils, like all universals, are most likely a compromise between different requirements, which means they do not do a very good job on all fronts of their work. It’s convenient to sell, it’s convenient to buy, but how technically correct it is in terms of the durability of the box and other transmission components is a question.

avtoexperts.ru

One of the most pressing questions for car enthusiasts is whether it is worth changing the transmission fluid in the gearbox of their “iron horse” and when is the best time to do it, has become the reason for a lot of controversy. Today we will answer this and related questions.

Gearbox and its “insides”: why do you need gear oil?

The gearbox serves to transmit torque from the engine to the wheel axles. Each such unit has several stages (in modern gearboxes, regardless of design, from five and above), with the help of which the driver can downshift or increase gears, and, accordingly, reduce or increase the torque transmitted to the drive wheels, affecting the speed of the vehicle.

Gearboxes are divided into several types:

  • mechanical (when the driver himself switches gears using the selector knob and the clutch mechanism between the box and the engine);
  • automatic (gears are switched by an automated system without driver participation);
  • robotic (a type of manual transmission in which the clutch and gear shift functions are performed by an automated control system);
  • stepless variators (the transition from stage to stage is carried out smoothly by transmitting torque from the engine to the drive wheels through clutches).

Regardless of the type of gearbox, gear oil is used for the smooth operation of its mechanisms. Its function is to lubricate the rubbing surfaces of gearbox mechanisms (gears, rollers, shafts, bearings), protecting the unit from overheating, corrosion of internal surfaces and, thereby, extending its service life. But the time comes when the oil poured into the gearbox on the conveyor gets old and loses its main characteristics, among which the main one is its viscosity. If you do not change the oil in the gearbox in time, its mechanisms may fail, which can lead to serious and expensive repairs. Therefore, every car owner must monitor the condition of the transmission oil in the gearbox of his car and change it in accordance with the recommendations of the manufacturer or specialists of the service center where the car is serviced.

Transmission oil: service life

The service life of gearbox oil varies depending on the type.

The oil in a manual transmission has a longer service life (this is due to the simplicity of the transmission design compared to an automatic transmission): the manufacturer recommends changing it after long runs - from 80-100 to 150-200 thousand kilometers, depending on the conditions in which the car was operated . In some operating manuals for cars equipped with “mechanics” you can find a note: “gearbox oil does not change throughout its entire service life.” If everything is clear with the first ones (as soon as the deadline approaches, we go to the service station and change our used transmission oil to new one), then what to do with the second ones? Experts advise regularly checking the oil level in the gearbox and its condition. If the transmission oil level has dropped, it should be topped up. When changing the oil completely, the volume of transmission fluid to be added depends on the capacity of each individual gearbox plus a certain amount of the same fluid to displace the old oil (typical for automatic transmissions).

Attention: we add only the oil that was poured into the box at the factory (can be obtained from official dealers), mixing different types of oils can lead to the precipitation of chemicals that can be deposited on the rubbing surfaces of the gearbox mechanism parts and lead to their breakdown .


Checking the oil level in the box

We check the condition of the oil in the gearbox at a service station: if chips or significant sediment from the impurities of the additives used in the transmission oil are found in the fluid, then it is better to replace it completely.

Transmission fluid used in automatic transmissions and CVTs requires replacement at lower mileage than with manual transmissions. On average, ATF (Automatic Transmission Fluid) is replaced at the second or third maintenance - that is, with a mileage of 60 to 90 thousand kilometers. The reason for changing the transmission fluid so early is that an automatic transmission, unlike a manual transmission, is a more complex unit with its own cooling system. Difficult operating conditions of the car and, accordingly, the automatic transmission lead to the fact that the circulation of transmission fluid is difficult, therefore it lubricates the rubbing surfaces of the mechanisms less effectively, cools them less well, and gear shifts occur more slowly. If you notice that the box is “stupid,” then most likely it’s time to replace the old ATF with a new one.

Types of transmission fluids for manual transmissions and automatic transmissions of cars

Transmission fluids differ from each other in two main parameters: kinematic viscosity and chemical composition.

Based on their chemical composition, these liquids, like oils for car engines, are divided into mineral, semi-synthetic and synthetic. Mineral gear oils were mainly used in older domestic vehicles. Currently, automobile manufacturers recommend filling synthetic-based transmission fluids into gearboxes. They are better adapted to work in a wide range of temperatures, withstand heavy loads, maintain operating condition longer, and, therefore, do not require as frequent replacement as mineral and semi-synthetic oils.

Based on kinematic viscosity, transmission fluids are divided into two classifications: viscosity index (SAE) and viscosity class (API). Let's consider the features of both classifications.

Classification of transmission oils according to SAE:

  • Fluids for car operation at low temperatures (“winter”) are designated as 70W, 75W, 80W and 85W, where W is the viscosity index;
  • Liquids for operating cars at high temperatures (“summer”) are designated as 80W, 85W, 90W, 140W and 250W;
  • Universal fluids (suitable for use in various climatic conditions) - designated as 75W–90, 80W–140.

Classification of transmission fluids according to API (GL):

  • GL1 are fluids without additives, which are intended for use in manual transmissions of trucks not equipped with synchronizers;
  • GL2 – fluids with anti-wear additives for tractors and other agricultural machinery that operate in moderate conditions;
  • GL3 - fluids with additives that resist wear (up to 2.7% of the total oil volume), which are recommended for use in transmissions of trucks operating in moderate conditions;
  • GL4 – fluids for universal operating conditions (containing up to 4% anti-wear additives) for transmissions of various types of vehicles – from cars to trucks and buses. They are used for transmissions with unsynchronized or synchronized gears.
  • GL5 – fluids for gearboxes of vehicles operating in extremely difficult conditions. They contain up to 6.5% multifunctional additives (anti-foam, extreme pressure, etc.);
  • GL6 – fluids for hypoid gears, which contain up to 8.5% wear-resistant additives. Used for gearboxes of cars with powerful high-speed engines.

In manual transmissions, manufacturers recommend using transmission fluids with SAE 75W–90 and API GL-3 (for manual transmissions of older cars), API GL-4 or API GL-5 (for manual transmissions of modern models).


Original Hyundai synthetic oil

Operating fluids for automatic transmissions are not tied to specific classes - their standards are set by the manufacturers of vehicle oils themselves. Automatic transmissions are filled with ATF transmission fluids with a special chemical composition - they usually contain a higher percentage of additives that prevent foaming. This is due to the design features of such a gearbox: the foam formed during operation can shut off the control solenoid, which regulates the supply of pressure to the valve body valve, and the gears will not engage.


Original automatic transmission oil from VAG

Automatic transmission fluids are also distinguished by color - usually they are red, in some cases they are green or blue. There are special transmission fluids that are designed for continuously variable transmissions.

In any case, before deciding to change the oil in a manual or automatic transmission, you need to find out what fluids the manufacturer recommends and strictly follow its recommendations and technical regulations.

Functions and replacement intervals for lubricant

Transmission oils for automatic transmissions (ATF) must perform many functions - energy transfer, lubrication of teeth and reduction of friction of paired elements, removal of heat and wear products, and must also have high resistance to oxidative processes, temperature changes, wear and foaming.

The lubricating fluid in the automatic transmission should be completely renewed every 30-40 thousand kilometers (or 15-20 km partially), since its properties decrease over time, which can lead to breakdown.

Some recommendations from popular manufacturers:

  • For Toyota, Audi - TOYOTA ATF Type T-IV VW: G 052 162
  • KIA - Hyundai/Kia: SP-III/SP IV
  • Nissan - AT-Matic D Fluid/AT-Matic J Fluid/AT-Matic K Fluid
  • Mazda - ATF MV/ATF M III
  • Chevrolet - Dexron: ​​VI
  • Ford - Ford: Mercon V
  • Opel - Dexron: ​​VI
  • Mercedes - MB: 236.2/236.5/236.6/236.7/236.9/236.10/236.11
  • Volkswagen - VW: G 052 162/G 055 025/G 052 990
  • Subaru - Subaru: ATF, ATF 5, ATF-HP
  • BMW: - LA 2634/ETL-7045 E/ETL-8072 B/LT 71141

Review of the best gear oils

There are three categories of lubricating fluids on sale - synthetic, semi-synthetic and mineral. They differ in composition, which indirectly affects the characteristics of gear oil. Brief tips on choosing a liquid:

  • If you have the money, then buy a synthetic or semi-synthetic composition. Such oils do not contain harmful impurities, which has a good effect on the shelf life and physical properties of the lubricant. But they are more expensive, which should be taken into account when choosing.
  • Mineral oils may contain harmful impurities that impair the strength of the protective film. This increases friction and increases the risk of scoring and cracks in the metal. But when choosing, remember that “mineral water” is cheap + they can be used on manual transmissions of older models.

May be interesting: Decoding and comparison of 75w80 oil

Synthetic gear oils

Fits into any cars (both old and new). Synthetics provide excellent technical properties, minimize the risk of scuffing, and protect against corrosion.

Motul Gear FF Comp 75W-140

This composition tops our review. Provides a thin, durable film that reliably protects machine components. Withstands high pressure and exposure to negative temperatures. Suitable for sports cars. The average price is 1800 rubles.

Positive aspects of the lubricant:

  • Maintains viscosity at any temperature.
  • Reduced consumption (you can add oil less often).
  • Excellent physical properties, convenient packaging.
  • Ensures stable operation of manual transmission.

No shortcomings were found with Motul Gear FF Comp 75W-140. The only negative that affects the choice is the high price.

SHELL Spirax S5 ATE 75W90

Closest competitor to Motul Gear. It has good characteristics and does not accumulate harmful impurities during operation. Thanks to the improved formula, it prevents corrosion and withstands heat and low temperatures. Cost – 1100 rubles.

Advantages of motor lubrication:

  • Excellent lubrication of manual transmission components and assemblies.
  • Reduced content of harmful substances (chlorine and others).
  • Good environmental properties, minimal impact on nature.

There are no deficiencies found in this oil. However, some drivers and mechanics note the flimsy packaging.

LIQUI MOLY 75W140 CL-5

Another lubricant that can be poured into any vehicle. Thanks to the additive package, LS can withstand low temperatures and increased loads and does not deteriorate during storage. An excellent choice for racing cars, trucks, buses traveling long distances. Cost – 1500 rubles.

Advantages of LIQUI MOLY 75W140 CL-5:

  • Economical consumption.
  • Reduces wear.
  • Completely environmentally friendly.
  • Excellent characteristics.
  • Practical packaging.

LIQUI MOLY 75W140 CL-5 lubricant has no disadvantages. However, buyers note that the liquid is unreasonably expensive. Therefore, it makes sense to buy another lubricant if you don’t want to spend extra money (your choice is semi-synthetic).

Motul Gear 300 75W-90

Another lubricant from a French manufacturer, which is in steady demand among Russians. Motul synthetics are suitable for cars, trucks, and special equipment. Can be poured into sports cars that will participate in races. Cost – 1200 rubles.

Advantages of Motul Gear 300 75W-90:

  • High-quality additives, stable viscosity.
  • Works at any temperature.
  • Minimal risk of scuffing and corrosion.
  • Excellent film resistance under pressure.

The liquid has no disadvantages. Although drivers complain about the high price and flimsy packaging.

Semi-synthetic gear oils

It is recommended to fill in new cars, as well as cars with low or medium mileage (up to 10 years). Good level of protection, improves manual transmission performance.

LIQUI MOLY Hypoid-Getriebeoil TDL 75W90

This semi-synthetic is suitable for any car, and it can be used in either an automatic or manual transmission. The composition prevents the formation of rust and scale, and minimizes the risk of harmful deposits. Cost – 1000 rubles.

Advantages of LIQUI MOLY Hypoid-Getriebeoil TDL 75W90:

  • Versatile, easy to use.
  • Environmentally friendly use.
  • Reduced consumption.

There are no downsides to the lubricant. However, drivers note that in extreme cold the transmission oil malfunctions. In northern regions, buy frost-resistant liquid (the choice should be based on the ambient temperature).

ENEOS GL-5 75w90

Transmission oil that can be used in hot weather and severe frost. Creates a dense protective film that does not collapse even under heavy loads.

If necessary, you can pour it not only into the mechanics, but also into the automatic transmission. ENEOS GL-5 75w90 does not foam, minimizes the risk of rust. Cost – 1200 rubles.

Advantages of gear oil:

  • A balanced choice in terms of price/quality ratio.
  • Low consumption under load.
  • Works at sub-zero temperatures.

You may be interested: What happens if you mix different gear oils?

ENEOS GL-5 75w90 has no disadvantages. However, drivers note that the lubricant is not sold in all stores. Therefore, it is recommended to buy the composition online.

Rosneft KINETIC GL-4 75W90

Not a bad gear oil from a Russian manufacturer. It has a low price, so it is widely used among Russian drivers. The composition includes a package of modern additives, so the lubricant is not too inferior to its European and American counterparts. Price – 500 rubles.

Advantages:

  • Availability (available in any store).
  • Easy to use.
  • Works well in cold and hot weather.
  • Not a bad choice for older cars.

When choosing, keep in mind that KINETIC GL-4 75W90 oil does not work well in cars that experience increased loads on the road (an automatic transmission or manual transmission may begin to jam). Therefore, it is recommended to use lubricant on passenger cars (for trucks, choose a higher quality transmission compound).

Liqui Moly Hypoid-Getriebeoil TDL 75W-90

High-quality transmission oil, which appeared on the Russian market a couple of years ago. It has an increased shelf life, high-quality additives, and stable fluidity. Suitable for cars and trucks. Price – 900 rubles.

Advantages:

  • Environmental Safety.
  • Low consumption.
  • Resistance to loads.

No disadvantages were found in the Liqui Moly Hypoid-Getriebeoil TDL 75W-90 transmission fluid, except for the high price (as for semi-synthetics).

Mineral gear oils

It is recommended to pour into old cars manufactured more than 10 years ago. They provide a good level of protection for manual transmissions (at a low price, unlike competitors).

Castrol Axle Z Limited slip 90

Suitable for passenger cars and lightly loaded trucks. Provides a good level of protection, suppresses the development of corrosion, reduces the risk of scuffing, and does not deteriorate during storage. Available in practical containers, which simplifies the transportation and storage of liquid. The average price is 600 rubles.

Advantages of gear oil:

  • Low price, availability.
  • An excellent choice for old cars.
  • Can be found in any store.

Castrol Axle Z Limited slip 90 is not recommended for use at low ambient temperatures (the fluid becomes too thick, which negatively affects the vehicle's power units). Keep this in mind when choosing.

MOTUL HD 85W140

A good transmission composition that is suitable for any gearbox. Manufacturers claim that 85w140 transmission oil is effective for both passenger cars and power equipment, trucks, and buses.

Thanks to its stable viscosity, the composition can be used at subzero temperatures, which is convenient for residents of the northern regions of Russia. The liquid is sold in containers of various sizes (plus for auto repair shops). Price – 400 rubles.

Advantages of MOTUL HD 85W140 lubricant for manual transmission:

  • Reasonable price, can be found in any store.
  • Universal application.
  • Stable operation in cold and high heat.
  • Practical packaging.

Drivers note that MOTUL HD 85W140 has no disadvantages. However, they note that the oil should not be kept in the open air (direct sunlight is harmful to it).

Lukoil TM-4

Russian oil, which has good characteristics and complete environmental safety. Contains additives that stabilize the viscosity of the composition. Can be used in automatic and manual transmissions. Price – 1000 rubles.

Advantages:

  • Environmentally friendly.
  • Convenient container.
  • Stable composition.
  • Corrosion protection.

Among the disadvantages is that it thickens at temperatures below -20, foams with prolonged use, and there are many fakes on sale.

Takayama 75W-90 GL-5

Mineral composition from a Japanese manufacturer, which is suitable for loaded vehicles (trucks, buses). The liquid has an improved formula.

Therefore, many of the disadvantages of mineral oils are smoothed out here. The liquid protects the metal from scuffing, suppresses corrosion, and reduces friction. Cost – 1000 rubles.

Benefits of mineral lubricant:

  • Works at any temperature.
  • Good technical characteristics.
  • Suitable for heavy transport.
  • Available in containers of various sizes.

Among the disadvantages is the high cost (for the same price you can buy semi-synthetics). Drivers point out that the liquid is not sold in all stores (you have to buy it online).

A few words about the structure

A manual transmission works completely differently than an automatic or CVT; here the torque is transmitted “dry”, that is, in the air, but not in oil. For an automatic transmission, transmission is carried out using a torque converter, but for a variator it is transmitted using variable discs and a special belt.

The mechanics are distinguished by two discs - the clutch and the so-called “basket” (if this is exaggerated). By default they are closed, but as soon as you press the clutch pedal, a special “fork” moves and you open them. Then you can change gear, then releasing the pedal, you connect the engine to the transmission and through it to the wheels.

Typically, a manual transmission has a pair of shafts on which special gears are located, and they correspond to the gears. When you move the gearshift lever in one direction or another, with the help of special “forks” you engage one or another gear, raising or lowering gears.

But it is worth noting that in mechanics there are often several gears in mesh (usually two), with the exception of neutral gear, of course, then they are open, that is, the “box” is disconnected from the engine - remember this is important!

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