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Old 06-10-2019, 07:23 PM   #4
30 Closed Cab PU
Senior Member
Join Date: Aug 2018
Location: Wisconsin
Posts: 1,521
Default Re: Help rear main leak

Originally Posted by midgetracer View Post
The stock oil pump will put out at least 40 psi. The reason you only see 2-3 psi is because there is no back pressure. The pump pumps oil to the valve chamber and it drains back to the dipper pan or runs down to the main bearings and the timing components.
Thanks for correcting me, learned something new.
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