What is a good/bad oil pressure reading?

Asked by falforque Jun 07, 2021 at 06:16 PM about the 1974 Cadillac Eldorado

Question type: Maintenance & Repair

What is a good/bad oil pressure reading for 1974 Cadillac Eldorado 500 cid
Engine?

2 Answers
27,730

oilyspill answered 3 years ago

The old rule of thumb for oil pressure, 10 psi for every 1k rpm. I don't have proper spec for your vehicle? I did see oil pressure spec for 1970 caddy--400hp, it said 35--40 psi, not sure about rpms for that spec?

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