Thread: Valvoline VR-1 10W30 is good stuff.
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Old 06-28-2008, 09:43 AM
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Quote:
Originally Posted by madmaxx View Post
Bottom line with the 20W50 and a completely hot engine I would have about 45 psig oil pressureat idle, today with the 10W30 I had 50 psig at idle after 20 mile trip in 100F heat. Funny thing is when car was cold 20w50 would be about 65 psig where the 10W30 is 60 psig.
Just curious. Is 5 psi cold/idle/running going to make a significant difference?
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