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Old 07-24-2015, 10:05 AM   #43
theastronaut
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Join Date: May 2011
Location: Anderson SC
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Re: Which grade oil should I use for my motor?

Quote:
Originally Posted by Isaiah92260 View Post
That is new info to me thank you so much! I've been meaning to ask what's te right PSI, my truck isles at 39 Psi at idle, I have my truck idling at 700 RPM's, and right now the truck has 5w/30.... Is that good?
That 39 psi, is that hot or cold? It won't hurt anything if it's higher than 10 per 1000 rpm. VW guys try to size the oil pump so that they don't make excessive pressure. When you only have 40-50 hp to start with you don't want a big pump making excessive pressure, it takes power to turn the pum and more power to turn a bigger pump.
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