oil pressure help

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Mar 2, 2008 | 10:28 PM

68bluebeast

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oil pressure help

I installed some electronic autometer oil, water and volts gauges this weekend in my 68 with a 360 with about 150,000 miles on it. I always noticed on the stock oil gauge that it ran a little low but when I got the gauges installed the oil pressure read about 20 psi idling and 40 while cruising but when it got worm it read about 10-15 psi idling and 18-20 while cruising, is there a way I can test the oil gauge to see if it is good?

Mar 3, 2008 | 01:54 PM

blue68f100

Fleet Mechanic

Joined: Aug 2007

Posts: 1,815

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From: Piney Woods of East Texas

Those pressure readings don't seam to far off for a std oil pump. With a 150k mi that not real bad. Normally you only need 5psi/ 1000 rpm as a min. May want to ask the experts on the FE threads, pretty sure some one will know. But if you do not have valve noise I would not be to concern.

The only way to check the gage is to tee in a mechanical gage.

Mar 3, 2008 | 04:45 PM

jowilker

Fleet Owner

Joined: Jun 1999

Posts: 24,552

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From: Creedmoor, North Carolina

I agree pressures seem about right for a FE with a hundred and a half miles on it.

John

Mar 3, 2008 | 05:06 PM

rbaker6336

Post Fiend

Joined: Feb 2007

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From: Blairsville,Ga

hook up a good manual guage and see what it reads

Mar 4, 2008 | 09:57 AM

390fe

Fleet Mechanic

Joined: Jul 1999

Posts: 1,360

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From: Iowa

I'm going to agree that your oil pressure sounds right for an FE with that many miles.

My FE has about 180,000 now, but it has new bearings on the crank, rods and mains, and a new oil pump. At 170,000 miles, I had 25psi @ 2500rpm hot, and the needle sat on the zero peg at idle. With the new bearings and oil pump, it has 15 psi at idle, and 35psi on the highway.