Re: What weight oil
I think that it depends on the build, age of the motor, tolerances, etc., but my buddy has a newly rebuilt 496 that he runs 20w50. I run 10w40. If that is what has been used the last 5 years, and there are no issues, why would you want to change it?
67 Black RS Coupe, 383, M21 & 10 Bolt Posi. Edelbrock E-Tech 170 Heads, 2204 Roller Cam, Air Gap Intake.
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