I have a 1983 300D and have a problem with the Transmission Fluid leaking into the crankcase. My local mechanic can't see how it is possible (I live in rural Ontario, no Mercedes Dealers nearby).
It all began when I noticed my gears were not catching, so checked the transmission fluid, and sure enough, there wasn't much on the dipstick, so I topped it up.
Next day, I had the same problem, but there were no leaks on my driveway, and I checked to see if it leaked out while driving, but that didn't seem to be the case.
I soon noticed my temp was a little higher than normal and decided to check the oil too, which is usually right at the level it should be, but not this time... It was WAY over the max line, by about 2.5 inches.
So I ask you, oh wise and gracious Mercedes Mechanics out there, how might this be possible?
Thank you to anyone who might reply.