Really Low Oil Pressure and Overheating - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-17-2005, 01:35 AM   #11
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40 once fully warmed up is good......mine is about 70 or so driving
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Old 07-17-2005, 01:43 AM   #12
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The 97 is about 30 fully warmed at idle in gear and about 65 cruising along.
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Old 07-17-2005, 01:55 AM   #13
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You should have 10 psi for every 1000 rpm for proper protection.
5000 rpm = 50 psi
1000 rpm = 10 psi

Usually one guage is faulty but two at the same time

Low oil pressure = higher friction
Higher friction = more heat
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Old 07-17-2005, 02:20 AM   #14
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Well, my grandfather'* guage has been showing these low pressure reading ever since my grandfather got the car, but if the oil pressure should be around 40 psi or so when idling, then I guess the seafoam did help. I think I'll do it again. But his pressure doesn't go up as the rpm'* go up, so at 5000 rpm'*, his pressure is still around 30 - 40. Still, I think its ok, I mean the car is not new anymore so a certain amount of wear is expected. But yea, to the original poster, pick up a can of seafoam, around $5, and pour 1/2 into your crankcase, and 1/2 into your gas. It'll probably improve your oil psi like it did with me.
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