Mercedes-Benz W164 transmission, transfer case and axle oils
ML 4Matic
Which oil goes in the Mercedes-Benz W164 front and rear axle?
The front axle takes MB approval 235.7 or 235.74. A rear axle with a locking differential requires 235.15, one without a lock 235.7. Oil without a Mercedes approval is at the user's own responsibility.
Which oil goes in the Mercedes-Benz W164 transfer case and automatic transmission?
The transfer case takes oil with approval 236.12. The automatic transmission takes 236.14 (red) or, in newer 7G+ transmissions, 236.15 (blue). Check your own car before filling.
Where are the Mercedes-Benz W164 oil drain and fill plugs?
The plugs of the front and rear axle and the transfer case are easy to see when the car is lifted. They are 8 mm hex sockets. Oil is filled until it comes up to the fill plug.
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