Oil pressure slipping? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

theo70 · 05-15-2003, 07:36 PM

I've heard that the oil pressure needle needs to be around 20 at idle, it is that way on mine, but after some highway driving, it dips to around 10 to 15 at a stop. If this is not enough, what can I do?

Roberty · 05-15-2003, 07:49 PM

I wouldn't worry about it too much. As you drive and your engine heats up, the oil thins out so your oil pressure will be lower than on a cold engine. You might try a heaver grade oil and see if it helps.
Robert

JimKshortstep4x4 · 05-15-2003, 08:08 PM

I agree with Roberty, it should be ok. If you are still concerned about the pressure, obtain a gauge that is known to be accurate and check the pressure as a comparison. If you have a factory gauge, it may not be that accurate.

Jim

Gordo · 05-15-2003, 08:17 PM

You'll be fine, rule of thumb is 10 psi per 1000 rpms on a hot used engine.

theo70 · 05-15-2003, 08:53 PM

Thanks for the input and for calming my nerves.

HotRod929 · 05-15-2003, 09:41 PM

How can you tell how many psi the oil pressure is at? I have the original gauge and it just has a H and a L on it with some lines in the middle. Thanks

HotRod

jhow66 · 05-15-2003, 10:45 PM

On my truck I have 2 gauges--orginal & aftermarket. When aftermarket reads 60 psi orginal reads last mark to right. Orginal guage reads 0 left-30 middle- 60 right. ( that is the way mine reads) Where should a gas guage read when full?-mine reads past full down on the next marks. I had the pointer off to repaint could I have put it back on in the wrong place? Anyone?

HotRod929 · 05-15-2003, 10:51 PM

What is an ideal pressure to have while at idle/ crusing on highway? Whats too High of a pressure? Thanks

HotRod

wHATANERD · 05-15-2003, 11:00 PM

Is there such a thing as too high of pressure????

05-15-2003, 07:36 PM	#1
theo70 COMING SOON... Join Date: Feb 2003 Location: Ft Worth TX Posts: 408	Oil pressure slipping? I've heard that the oil pressure needle needs to be around 20 at idle, it is that way on mine, but after some highway driving, it dips to around 10 to 15 at a stop. If this is not enough, what can I do?

05-15-2003, 07:49 PM	#2
Roberty Hot Damn - Here I Am!! Join Date: Feb 2000 Location: Ringgold, Georgia Posts: 726	I wouldn't worry about it too much. As you drive and your engine heats up, the oil thins out so your oil pressure will be lower than on a cold engine. You might try a heaver grade oil and see if it helps. Robert __________________ My vehicles: '90 Silverado Sport '71 Chevelle SS Convertible '70 C-10 - My Grandfather bought it new - original un-restored

05-15-2003, 08:17 PM	#4
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	You'll be fine, rule of thumb is 10 psi per 1000 rpms on a hot used engine. __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

05-15-2003, 09:41 PM	#6
HotRod929 Registered User Join Date: Mar 2002 Location: Bondurant, IA but in Worcester, MA for school Posts: 767	How can you tell how many psi the oil pressure is at? I have the original gauge and it just has a H and a L on it with some lines in the middle. Thanks HotRod __________________ 1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/

05-15-2003, 10:45 PM	#7
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	oil pressure On my truck I have 2 gauges--orginal & aftermarket. When aftermarket reads 60 psi orginal reads last mark to right. Orginal guage reads 0 left-30 middle- 60 right. ( that is the way mine reads) Where should a gas guage read when full?-mine reads past full down on the next marks. I had the pointer off to repaint could I have put it back on in the wrong place? Anyone? __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

05-15-2003, 08:08 PM	#3
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	I agree with Roberty, it should be ok. If you are still concerned about the pressure, obtain a gauge that is known to be accurate and check the pressure as a comparison. If you have a factory gauge, it may not be that accurate. Jim

05-15-2003, 08:53 PM	#5
theo70 COMING SOON... Join Date: Feb 2003 Location: Ft Worth TX Posts: 408	Thanks for the input and for calming my nerves.

05-15-2003, 10:51 PM	#8
HotRod929 Registered User Join Date: Mar 2002 Location: Bondurant, IA but in Worcester, MA for school Posts: 767	What is an ideal pressure to have while at idle/ crusing on highway? Whats too High of a pressure? Thanks HotRod __________________ 1970 Chevy C-20 350 V-8 Turbo 350 w/ shift kit Dana 60 w/ 4.10 gears AND Powr-Loc POSI New Additions: Summit Headers 135amp alternator Proform HEI Edelbrock 1406 600cfm carb Sunpro Tach Powr-Loc POSI Edelbrock Performer RPM Intake MSD 6A Ignition Box AIM: HotRod929 Visit My Site: http://1970chevy.netfirms.com/

05-15-2003, 11:00 PM	#9
wHATANERD Registered User Join Date: Mar 2003 Location: Uvalde, Tx Posts: 407	Is there such a thing as too high of pressure???? __________________ 1969 C/10 Longbed undergoing rebuild. Old Chevy's Never Die, They Just Rust Around The Edges



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