What color is atf m-v transfer fluid

ATF, almost 20 different compulsory types ... 1st December 2019

In Europe more and more new cars are being delivered with automatic transmissions. The reason for this is of course the high level of comfort, but also the arrival of (semi) autonomous driving.

The latter requires an automatic transmission. With functions such as “distance controller” and “traffic jam assistant” cars can drive semi-automatically between 0 and 130 km / h, for example. The different types of automatic transmission systems each require a specific oil in order for the transmission to function smoothly and without interruption for its entire service life. This oil must be changed in good time so that the gearbox continues to function properly. In this newsletter you will learn more about automatic transmissions and the oils they need.

Overview of the various automatic transmissions

AMT - Automatic Manual Transmission
(automated manual transmission)

Many drivers perceive this system to be an automatic transmission, but it is a manual transmission operated by a “robot”. Examples of such a transmission are the Opel Easytronic and Alfa Romeo Selespeed transmissions.

Liquids that are necessary for the AMT gearbox:

  • Gear oil (for example 18000MTF)
  • Electronic / hydraulic control (e.g. 50000SCF)

Change cycle: The change cycles are comparable to those of manual transmissions.

DCT - Double Clutch Transmission
(Double disc clutch transmission)

This system is a transmission with double clutch and two axles. The odd and even gears are on two separate axes. The system is called DSG (Direct Shift Gear) by the VAG Group. These transmissions can be equipped with a dry clutch or a wet clutch. In the case of the wet clutch, the disks work in a liquid bath.

Liquids that may be required for the DSG gearbox:

  • if it is a version with a "wet" clutch, liquid is used for the clutch disks (e.g. 16000DCTF)
  • Liquid for the transmission section (e.g. 16000DSG)
  • Liquid for control, actuator section (e.g. 50000)

Change cycle: Fluids for DCT / DSG gearboxes must be changed in good time at the intervals specified by the manufacturer. Usually this is between 60,000 and 120,000 kilometers.

CVT Continue variable transmission (CVT)
(continuously variable automatic transmission)

This system has no fixed gears. The speed is determined with the accelerator pedal and the CVT causes the car to accelerate. The heart of the CVT transmission is a so-called push belt. This push belt runs over two pulleys with different diameters, which enables a stepless transmission. CVTs are widely used by Japanese automakers; the Audi Multitronic also has a CVT transmission.

Liquids that are necessary for the CVT transmission:

  • CVT fluid, (for example 16000CVT)

Change cycle: for CVT transmissions usually between 60,000 and 120,000 kilometers.

Automatic transmission
(Automatic transmission)

This system refers to the conventional automatic transmission with a torque converter.

The automatic transmission of a modern car requires timely and adequate service. There are different manufacturers who produce different systems of automatic transmissions and each have different requirements for the transmission oil. The differences lie, for example, in the viscosity and the friction characteristics. The transmission oil for an AT transmission is generally called ATF (Automatic Transmission Fluid). There are many brand-specific requirements for ATF fluids. An example is the 16000MB9 for a 9-speed automatic transmission from Mercedes Benz.

Change Cycle: Some makes of vehicles sometimes indicate that there is no need to flush or change the transmission fluid. However, MPM recommends changing the oil in an automatic transmission (AT) after approx. 90,000 kilometers in order to avoid repairs and high costs. With this type of transmission, oil always remains in the torque converter (and in the oil cooler + in the hoses), so flushing and filling with new oil is often better than simply changing it.

Consequences of using the wrong gear oil

  • The automatic transmission jerks when shifting.
  • The automatic transmission does not shift in time.
  • The automatic transmission cannot hold the selected gear.
  • The automatic transmission does not react (well) to kick-down.
  • The engine speed fluctuates.
  • The automatic slips through.
  • The fuel consumption is exceptionally high.
  • Wear and damage due to insufficient lubrication.

It is also important and correct to perform the essential transmission fluid change in a sustainable and “green” manner. This is how you, your customers and the environment benefit.

For technical questions:

Contact MPM Technical Support

In summary:

  • Growing market share of cars with automatic transmissions
  • The way in which the different types of automatic transmissions work differs significantly. The specific transmissions also require specific types of transmission fluids prescribed by the automobile manufacturer.
  • Automatic transmission oils must be changed in good time, even if some vehicle manufacturers sometimes promise a “filled for life”, ie “filled for the entire service life”.
  • By using the right fluid and replacing / changing it in good time, malfunctions and damage to automatic transmissions can be prevented.

Tips for the workshop:

  • Automatic transmission filling instructions can be found on the MPM website.
  • Inform the customer that the gear oil must be changed in good time. There is no such thing as “filled for the entire service life”.
  • Never mix different types of automatic transmission oils.
  • Make sure the gear oil is at the standard level. If the fill level is too low, there is a risk of malfunction or damage, such as burned wet clutch plates.
  • If possible, first check for any error codes. But always determine the functional status of your customer's automatic transmission by taking a test drive.
  • Always collect the oil separately and carry out a visual (color, wear part) and odor test. Look out for abnormalities and find out what caused them. It is recommended to keep a liquid sample in case of doubt.
  • You can have the transmission oil analyzed by MPM.
  • It is better to flush automatic transmissions with torque converters (with or without an additive) rather than changing the ATF fluid.
  • The color of the automatic transmission oil does not say anything about the quality, but it does indicate whether the correct oil is being used. Mercedes Benz in particular has various automatic transmissions that require a different type of oil. The color of the liquid can help here (MB 236.14 is red; MB 236.15 is blue).
  • Always use the specified gear oil! If in doubt, ask which specification is required for the respective gear unit.
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