M120 crankcase ventilation
 

Rear main seal is leaking on my 2000 SL600. Dealer thinks that the engine may not be breathing/venting. My local dealer is 100 miles away and the car is not drivable.

The car will not leak a drop idling, but when you race up the engine, oil starts dripping from the rear center of engine.

Does anybody know what I need to check to make sure the crankcase has proper ventilation?

Thanks,

Al

i am not familiar with your particular engine, but most engines, if you open the oil filler cap you will get an idea of blow by. to push oil out a seal would take a massive amount of it.

in fact i cannot imagine a scenario in which crankcase pressure could do so.

i could be wrong i suppose.

tom w

Al, send me your e-mail address. I have some info that may help.

Pete