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Old 03-23-2019, 07:39 AM   #25
30 Closed Cab PU
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Join Date: Aug 2018
Posts: 2,332
Default Re: Rear Main Bearing Oil Behavior

Quote:
Originally Posted by roy green coupe View Post
One very important factor is crankcase pressure from blow by past the rings , this is certainly more important than what is going on in the bell housing.

Arm Chair Mechanic here. I thought the Crankcases Oil Breather Tube prevented crankcase pressure caused by blowby?


That is why you get fumes/oil on the motor on the drivers side, pushing fumes/oil out the breather tube on motors with blowby.


If I am wrong, would appreciate learning why.
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