Major maintenance of the 60,000-kilometer transmission system of Lao Tiguan

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 September 24, 2024
The 15-year-old Tiguan has traveled more than 60,000 kilometers so far.
So far, there has been no common problem of Volkswagen’s ea888, burning oil. I hope I can persist.
Other maintenance items of the car are maintained in accordance with routine procedures, including extreme care, Jinmei and Man brands.
After 60,000 kilometers, you can consider maintaining the transmission system.
Maintenance of the four-wheel drive Tiguan transmission system mainly includes the gearbox, front differential, rear differential, and Hand four-wheel drive system.

Gearbox fluid, 12 liters, afw, a little expensive.

One liter of oil before and one liter of oil after.

Hande four-wheel drive oil
There are gravity change methods and circulation machine change methods for gearbox oil change.
The principles and differences of these two exchanges will not be repeated again. There are already many explanatory posts.
It has been four years since Tiguan, 60,000 kilometers, which is a relatively long time. I will replace it with a recycling machine this time and use gravity next time.

The engine bottom shell is still clean

The gearbox bottom shell is also not bad

Hande four-wheel drive

It’s still clean, it hasn’t been leaked yet

Hande four-wheel drive

Drain the four-wheel drive oil and it is still clean. It is not easy to tell whether it can still be used. For example, the oil released now looks like a light yellow, and the new oil is egg white.

Connect the gearbox circulation machine interface first

Drain the rear differential oil

Put in the front differential oil. The color of the front differential oil is obviously darker than that of the back differential oil.

The little master made a simple vacuum barrel and used an air pump to pump the new oil into it. I think it is still inappropriate. The intensity and injection amount are still difficult to control. It is best to use a special vacuum barrel to inject it in.

Interfaces for various models

The first step is cyclic cleaning. If you do it well, you can clean up the impurities in the gearbox.

For 12 liters of transmission oil, exchange 10 liters in equal amounts first.

Ten liters have been exchanged, and you can replace another liter or so.
The whole process, plus the two hours of car washing, is not very complicated.
But I feel that cyclic replacement is a waste of oil.
However, cyclic replacement replaces the oil in the valve body in the transmission more thoroughly.
Choose gravity replacement in the future!
After driving after the vehicle was replaced, to be honest, there was no silky smooth feeling.
But after parking, I still put it in d gear, and the vibration was indeed smaller.
Wait until you have traveled more miles and share your feelings again!