this car is the W211 model I presume, if it is then pop the hood and make sure the radiator does not say VALEO on it.

If it does - stop the car, get the transmission fluid checked from the dealer for antifreeze contamination and proceed accordingly.

It is a known fault in that model and can cost you heavily.

My car which is a W210 has a backward leak but Im installing a new radiator which I recieve today from the brown truck.

The shifter will have and S/W switch, for standard and wet - the wet mode makes it launch from 2nd and also has a super low reverse to aid in wet condition. The S is normal driving and is really great in the 722.6 transmission.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)