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Registered
Join Date: Oct 2001
Location: north vancouver, bc, canada
Posts: 1,737
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The rule of thumb is 1 bar or better for every 1000 rpm when the car is hot. So 3000 rpm should be 3 bar or better, 4000 rpm should make 4 bar or better, etc. At idle it doesn't really matter what the oil pressure is because the engine isn't working so it doesn't need oil pressure, and the guages aren't that accurate at those low pressures. Also, when the car is cold, the oil is thicker so oil pressures are higher - also not readings you should pay much attention to when evaluating an engine's health.
Hope that helps. 
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jasper
2002 996 - arctic silver - PSS9, H&R sways,X51 oil pan, console delete, AASCO liteweight flywheel, gbox detent, RS motor mounts, 997 shifter. Great car.
past: another 2002 996 and a 1978 SC with-webers-cams-etc.
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