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Old 09-11-2006, 12:33 PM
elvis 66 chevelle's Avatar
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Fram oil filter = lower oil pressure

I have 66 chevelle w/ a small block Chevy 400 cubic inch motor app. 450 H.P. the engine was built one year ago blue printed and balanced. i have been using Fram TG5 oil filter because it is the long filter and has the black rough surface to get off easier. after the engine warms up my oil pressure drops to 16 - 18 psi at 700 rpm idle in drive and my oil pressure warning light (good one) comes on. i have read all the stories about Fram filters being cheap and dropping oil pressure. i put on a Mobil 1 MI302 oil filter and drove a hour to a car show the light did not come on!! on way home had to idle for long period water temp. got 195 degrees same 700 RPM oil light did not come on! oil pressure was about 20 - 22psi it made me feel better. i am now using royal purple 10W30! do you guys think this oil pressure is ok or should i go to heavier oil???? cruising oil pressure is about 40-42 after warmed up!!!!

Thanks
Doug

Last edited by elvis 66 chevelle; 09-11-2006 at 12:39 PM. Reason: miss spelled
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