08-22-2007, 07:58 AM
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CC Member
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Join Date: Nov 2003
Location: Annapolis,
MD
Cobra Make, Engine: Unique, 427SO, it runs
Posts: 2,636
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Not Ranked
Quote:
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Originally Posted by 4pipes
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Dave, I previously used Valvoline Racing 20w-50, and my oil pressures were 80 psi and above cold AND at RPMs above 3K warm, and only down to about 50 psi at warm idle. I switched to Rotella 15w-40, and they dropped about 10 psi on each end, which I felt more comfortable with, particularly at cold start-up.
Thanks Rick, it was your previous excellent research on solid flat tappets cams that motivated my change last year.
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Clay
Last edited by clayfoushee; 08-22-2007 at 08:03 AM..
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