Oil Pressure?
Instructor
Joined: Jun 2002
Posts: 142
Likes: 0
From: cedar springs mi
Re: Oil Pressure? (red89vette)
I was going to ask the same thing :lol:
I have a 85 that was rebuilt last year and it held steady at 70lb's then this year it started to bounce al over the place 60lb's at the most and when warm drop to 20 or less at a stop then go up when I take off . I just changed the sending unit and it still droppes off is this normal :confused:
I have a 85 that was rebuilt last year and it held steady at 70lb's then this year it started to bounce al over the place 60lb's at the most and when warm drop to 20 or less at a stop then go up when I take off . I just changed the sending unit and it still droppes off is this normal :confused:
Melting Slicks
Joined: Jun 2002
Posts: 2,705
Likes: 30
From: Chesapeake Beach Maryland
2015 C5 of Year Finalist
Re: Oil Pressure? (red89vette)
My oil pressure seems to drop off at idle which is to be expected from my prior expereince with smallblock chevy engines. I have 90K on my '94 and was wondering what pressure you were running at idle also.
My analog guage sits about 1/4 at idle and just over 1/2 at about 1800-2000 rpm. Also - do you guys get a psi reading for oil on your digital guage? I only get water temp, oil temp, and volts. Is mine broke or do I need to do something else to get that display? Still without an owners manual.
My analog guage sits about 1/4 at idle and just over 1/2 at about 1800-2000 rpm. Also - do you guys get a psi reading for oil on your digital guage? I only get water temp, oil temp, and volts. Is mine broke or do I need to do something else to get that display? Still without an owners manual.
Team Owner
Joined: Sep 2001
Posts: 62,153
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Oil Pressure? (red89vette)
Normal at cruise should be between 45-60psi and about half of that at idle. 14psi sounds a bit too low to me.
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Thread Starter
7th Gear
Joined: Jun 2002
Posts: 7
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From: Owingsville Ky
Re: Oil Pressure? (red89vette)
Just wandering if the weight of oil used will affect the oil pressure much? I am using 5W-30 right now. Would changing oil weight help raise my oil pressure? Is this really a problem having low oil pressure? Seems that everyone has alittle different reading. My Vette also has about 130,000 miles on it. Thanks for all the replies!
Team Owner
Joined: Sep 2001
Posts: 62,153
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Oil Pressure? (red89vette)
Just wandering if the weight of oil used will affect the oil pressure much? I am using 5W-30 right now. Would changing oil weight help raise my oil pressure? Is this really a problem having low oil pressure? Seems that everyone has alittle different reading. My Vette also has about 130,000 miles on it. Thanks for all the replies!
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Re: Oil Pressure? (vader86)
I would like to think that changing viscosity to 20/50 ought to have a noticeable effect on pressure...oh well :rolleyes:
I have near 100,000 on my 88 and run Amzoil 20/50 Gold
At lowest, hot idle I run around 48 and at speed 68+
I also have several 305's with very high mileage and run straight 30 w. They all hold at least 30 psi at idle and 45+ at speed
Check your sending unit and your guage...14 would concern me
but then...what do I know :D
I have near 100,000 on my 88 and run Amzoil 20/50 Gold
At lowest, hot idle I run around 48 and at speed 68+
I also have several 305's with very high mileage and run straight 30 w. They all hold at least 30 psi at idle and 45+ at speed
Check your sending unit and your guage...14 would concern me
but then...what do I know :D
Burning Brakes
Joined: Apr 2002
Posts: 755
Likes: 0
From: Patterson CA
Re: Oil Pressure? (red89vette)
Just wandering if the weight of oil used will affect the oil pressure much? I am using 5W-30 right now. Would changing oil weight help raise my oil pressure?