Originally Posted by muskrat
Just wondered if anyone had tried a different spec as it would seem that if the change gets better when its warmer then thinner would be better?
They spec that fluid for a reason and a team of MB engineers knows a lot more than I do about the inner workings of the tranny and fuid dymanics. I am sure you could get something else, but if it is a year round driver, I would stick with what MB recommends.