05-04-2009, 08:42 AM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Southern Connecticut,
CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
Posts: 2,105
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Not Ranked
Hey MM:
My thinking is that I would prefer the oil flow through the engine not the pressure relief valve. When I got my car it was running 20W-50, the pressure was routinely in the 40 range. I changed to 5W-30 and now I run around 60PSI.
Bob
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