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Old 02-07-2005, 09:21 AM   #1
GhettoPop
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Join Date: Dec 2002
Location: NYC
Posts: 694
Default oil pressure

what should the oil pressure be on a stock motor 90 gt? i've heard the rule is 10psi per 1000 rpm's. w/ my autometer electric oil pressure gauge taking readings from the stock location next to the oil filter. i run 10w-30

when cold:
idle 750rpm = 45-50psi
2000 rpm's = 55-60psi

oil pressure will get lower as car warms up....

when at operating temp: (190-195F)
idle 750rpm = 20-25psi
2000 rpm = 45-50psi

20-25psi seems a little low to me, but it never dips under 20psi. should i start using 10w-40 when winter is over?
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