Quote:
Originally Posted by shertex
Yeah, I finally switched at Shell ATF 134 on the 91 300D (also use it in the W210 and W211) and will be extending drain intervals. Rather than do a complete drain at a longer interval, I will probably suck out 2.5 quarts at shorter intervals. Just easier than messing with the pan.
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I've been doing it this way for many years. On my 190d, I suction 2qts of transmission fluid every time I change the oil, and replace it with synthetic. I've gone as long as 100K miles without opening the pan. Transmission was rebuilt at 320K miles, which is typical for a 722.4.
I'm pretty sure that synthetic is specified for W210 and later cars.