How to choose transmission oil, transmission oil, which one to choose

It is usually called gear oil, which is mainly used for lubrication and heat dissipation. It is divided into 5 grades according to its quality level, and it has been discontinued since then, and only GL4 and GL5 are generally sold in the market. In terms of oil characteristics, manual transmission oil is more viscous than automatic transmission oil, and the replacement cycle is generally shorter than automatic transmission oil.

The viscosity grade of a vehicle gear oil is mainly based on the ambient temperature. No. 90 or No. 140 oil can be used in the southern part of China, 80w 90 or 75w No. 90 oil should be used in the northeast and northwest cold areas, and 85w 90 or 85w No. 140 oil should be used in the central part of the country.

2. AMT transmission oil:

AMT can generally be used with MT transmission fluid. Its working principle is improved on the basis of manual transmission (MT), mainly changing the manual shift control part, that is, under the condition that the overall transmission structure remains unchanged, the shift is realized by installing a microcomputer control automatic control system, therefore, AMT can use a transmission oil with MT.

3. AT Transmission Oil:

It is a special oil for automatic transmission, it has two functions, in addition to lubricating and dissipating heat from the planetary gear set, the most important thing is to transmit power, so its viscosity is relatively lower than that of manual transmission. Moreover, its role is to be responsible for hydraulic transmission, so the flow requirements are higher, and the resistance to air bubbles is also more stringent than that of manual transmission oil. The AT now mainly has 4AT, 5AT, 6AT, 7AT, 8AT, 9AT, etc., and the transmission fluid models used are also different.

Note: The oil grade purchased must be equal to or higher than the product used in the original car, that is: if you used No. 4 before, then it is best to choose No. 4 or No. when replacing it.

4. CVT transmission oil:

The essence of CVT oil is similar to AT, but it is also a special oil, because CVT is a special steel chain drive, which requires different values such as flow rate, friction performance, and expansion coefficient of oil, so it cannot be replaced by AT oil, relatively speaking, it has a lower viscosity than AT oil, and also has a certain damping friction to prevent the transmission chain from slipping. Wilf Energy Saving Engine Oil Power Synthesis (CVYF).

5. DCT Transmission Oil:

Although the DSG dual-clutch transmission is also called an automatic transmission, it is fundamentally different from the previous automatic transmission, and the DSG can be understood as a combination of two MTs, so the oil used in the transmission is gear oil and hydraulic oil. It is also a special product and cannot be mixed with other transmission fluids.

Transmission Oil: The automatic transmission oil gauge has two sides.

The cold side refers to the transmission oil temperature between 30 and 50.

The hot side refers to the transmission oil temperature above 50.

Since the transmission oil temperature is difficult to grasp at 30 50, it is generally measured in the hot way.

The method of measuring automatic transmission oil is more complex and is to measure the engine while it is idling.

1.The car runs normally for about 5 minutes (so that the automatic transmission oil reaches more than 50)2Parking, no ignition.

3.Press the brakes, toggle the gear lever, stay in each gear for at least 2 seconds, and finally stop in P gear

4.Keep the engine running at idle and open the engine compartment cover.

5.Pull out the automatic transmission dipstick and wipe it clean with a dry cloth first.

6.Insert the dipstick back to the bottom and pull it out.

7.The oil should be between the two scales on the hot side.

8.Insert the dipstick back to the bottom to complete the inspection.

After reading that everyone answered a lot of signs, I won't repeat them one by one.

But it is still necessary to remind you that the transmission oil is best to follow the oil described by the manufacturer, in addition to the brand, but also pay attention to the model, viscosity.

Sometimes thicker is not always better, which increases transmission drag.

Therefore, follow the requirements of the original factory and choose a big brand.

It depends on whether you are a manual or automatic gear, if it is a manual gear, you can do it with casual gear oil on the market, this requirement is not high, use tens of thousands of kilometers and then replace it, not dozens of dollars, very cheap. But if you are an automatic transmission, it is complicated, because the transmission oil of the automatic transmission has the role of transmitting power in addition to lubrication, and it is best to change it with an equal amount of exchanger, otherwise it is likely that it will not be clean. Therefore, the original factory is recommended first, and if you can't find it, buy a big brand.

The transmission fluids in the market are broadly divided into 5 categories, which are manual (MT) transmission fluid, automatic (AT) transmission fluid, AMT transmission fluid, CVT transmission fluid and DCT transmission fluid. The specific choice varies depending on the car.

The most fundamental difference between transmission oil is the difference in its friction system, automatic transmission oil has more delicate oil molecules, as well as efficient shear resistance, in the state of semi-clutch or at the moment of combination, the oil film acting on the surface of the friction material can play an effective suspension cushioning role, can moderate the strong impact force, so that the combination is smoother. The fully synthetic dual-clutch transmission oil produced by Kunlun Lubrication is a fully synthetic oil. And it has obtained the world's most important dual-clutch control module company BW certification, which is the authoritative certification in the industry, and Kunlun lubrication is also a domestic product.

How to choose the right transmission oil.

Transmission fluid brands are:

1. Mobil: It has good thermal stability and high temperature oxidation resistance, good anti-rust and anti-corrosion performance, and effective low-temperature lubrication.

2. Bosch: It can prevent the accumulation of sludge, bonding and corrosion of metal parts, and can maintain good shifting performance at lower temperatures.

3. Total: Total has excellent low temperature performance, excellent thermal and oxidation stability and excellent anti-rust and anti-foaming properties, the raw materials are imported, the formula comes from France, it can be said that it is an efficient and wear-resistant, stable and reliable transmission oil.

4. Great Wall: It has excellent thermal stability, oxidation stability and cleaning performance, and excellent low-temperature starting performance to meet the lubrication needs of different temperature areas.

5. Castrol: Recommended for most Asian (e.g., Japanese) manufacturers of automatic transmissions, as well as European vehicles (ATF) installed in Aisin automatic transmissions.

Depending on your car, choose differently.

If the German chooses the ZF, the American chooses the AC, and the Japanese chooses the Aisin, but some German Volkswagen cars are also equipped with Aisin's boxes, and it is better to choose Aisin's transmission oil.

Actually, it mainly depends on what brand of gearbox your car is equipped with.

ZF (ZF) has 100 years of experience in transmission development and manufacturing, coupled with ZF's long-term experience in the field of automotive chassis and rotation, the specificity and reliability of its products bring better driving experience and more cost-effective maintenance products to global manufacturers and customers. ZF automatic transmission oil is highly recognized by the majority of car owners because of its professional, dedicated, high-quality and other advantages.

Aisin automatic transmission fluid.

The second is Aisin automatic transmission oil, Japan Aisin is one of the world's top 500 companies, Aisin is the international brand that has enjoyed a lot of reputation, their automatic transmission oil is of high quality, and as an old brand they attach great importance to their brand reputation, so in the production process are required to go through professional quality testing, any product must ensure quality, stability and ensure the best in the same field.

PDK automatic transmission fluid.

Compared to traditional lubricants, PDK automatic transmission fluids, to:"Powerful and smooth shifting"It is well-known and provides a two-year warranty of 40,000 kilometers for a maintenance, so it is deeply loved by the majority of car owners. PDK has become a well-known and strong brand in China's lubricant industry.

Ask how much oil to change at a time.

Ask a question, shall we?

Question: How many liters is a bottle?

How not to speak.

One kilogram per bottle, 4 to 5 bottles at a time.

Do you have any more questions?

At present, good brands of automatic transmission oil, such as: Mobil, Castrol, etc., are of similar quality, they are all good brands, focusing on R&D and after-sales, and the oil change machine with it is very clean.

Mobil, Aisin, Shell, ATE are all very good.

Winning cards are not recommended.,It's too general.。。

It depends on what kind of car you have, if it is the best for the original manufacturer of the family car.

The others are ZF, Aisin, Mobil, Nissen Land Movement, and Fox, which are quite famous.

It's up to you, as long as you meet the requirements, I use Shengyu transmission fluid.

I personally recommend that the transmission oil of the car is best to choose the original transmission oil, which is more suitable for reference.

【Pacific Automobile Network】Gear oil. The gearbox and the rear axle are used with gear oil, and the engine oil is called engine oil, the performance of the two is different, not to be confused, and the gear oil of the gearbox is not matched with the engine, and there is no problem that affects the combustion of the engine.

Add gear oil. The gearbox and the rear axle are used with gear oil, and the engine oil is called engine oil, the performance of the two is different, not to be confused, and the gear oil of the gearbox is not matched with the engine, and there is no problem that affects the combustion of the engine. Don't be misled.

Too much gear oil in the gearbox has the following effects: when the gear is rotating, the resistance of oil stirring increases, and the transmission efficiency decreases; As a result, the temperature of the gearbox is too high, and the gear oil is easy to deteriorate; When the oil temperature rises, the pressure inside the gearbox increases, and the gearbox is prone to oil leakage.

Forklift gearbox plus No. 8 hydraulic transmission oil, hydraulic oil is the hydraulic medium used in the hydraulic system using liquid pressure energy, which plays the role of energy transmission, anti-wear hydraulic oil, system lubrication, anti-corrosion, anti-rust, cooling and so on in the hydraulic system.

GS lubricating oil professional maintenance chain whether it is automatic transmission oil, or manual transmission oil, has a certain shelf life, after the car has traveled to a certain mileage or the maintenance cycle has arrived, it is necessary to replace the oil immediately. Because, with the extension of use, the transmission oil will become dirty, the viscosity will decrease, and the transmission will not be well protected.

With the increase in the number of types of automobile transmissions, the number of special transmission fluids has also increased. Common transmission fluids are MT, AT, AMT, CVT, DCT, etc. It should be noted that different transmission oils should not be mixed.

The selection of automotive transmission oil should consider its role: to keep the transmission system clean, to extend the life of the transmission, to have the function of low temperature resistance, etc. The technical requirements of each gearbox are different, so manufacturers have their own specific gearbox fluids.

There is a fundamental difference between transmission oil and its friction system. The oil molecules of automatic transmission oil are more delicate, shear resistant, and can effectively suspend and cushion, relieve the impact force, and make the bond smoother. The transmission fluids on the market can be broadly divided into five categories:

Manual (MT) transmission fluid, automatic (AT) transmission fluid, AMT transmission fluid, CVT transmission fluid and DCT transmission fluid are available. The technical requirements are different for each oil. The oil grade must be equal to or higher than the original car.

If you have previously used No. 4 oil, it is best to choose No. 4, No. 5 or No. 6 oil when changing the oil. Due to the special transmission chain, the flow, friction performance and expansion coefficient of CVT transmission oil are different. The viscosity is lower than that of AT oil, and there is damping friction to prevent the transmission chain from slipping.

The oil used in the DSG dual-clutch transmission is gear oil and hydraulic oil and cannot be mixed with other transmission oils. The choice of viscosity grade for gear oil depends on the ambient temperature. No. 90 or No. 140 oil can be used in the south, No. 80w No. 90 or No. 75w No. 90 oil is used in the cold areas of Northeast and Northwest Songcha, and No. 85w No. 90 or No. 85w No. 140 oil can be used in the central part of Sheji.

1.For the gearbox, lubrication, viscosity and oil temperature stability side mold, especially the oil temperature of the automatic transmission oil, in the case of the radiator is too dirty, the heat can not be dissipated, the computer will enter the emergency operation mode after detecting the high temperature, and force upshift (lock the gear, lock a specific gear to drive), there will be a "dry" fuel pedal vehicle can not run, driving has a sense of dragging, frustration, when the oil temperature exceeds 135 °, the friction plate clutch plate will cause great damage.

2.Automatic transmission car: under normal circumstances, it is replaced once every 2 years or more than 4-60,000 kilometers.

The specific needs to look at the driving situation, if the vehicle is in smooth gear, the gearbox noise change is not large, you can not change; If the car looks jerky when changing gears, and the transmission becomes significantly louder after speeds above 100 km/h, you may need to change the engine oil.

3.Manual transmission car: manual transmission car technology is mature, low failure rate, strong reliability, generally 3 years or every 6-80,000 kilometers to change the transmission oil.

4.When you change your engine oil, you can check your transmission oil by the way, and since the inspection process is more cumbersome, you can ask the service department of the shipping dealer to handle it. In order to measure accurately, the car must be discharged into neutral p, run at idle speed, and parked on a flat place, and the oil must run to an operating temperature of 80 93.