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what should oi pressure be?!?!

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Old Feb 8, 2009 | 08:08 PM
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Default what should oi pressure be?!?!
what should the oil pressure be on a warm engine??? once you have already been driving on the hwy etc etc what should it be?!?!??! thanks!
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Old Feb 8, 2009 | 08:13 PM
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Stock engine - 35-45 psi at idle
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Old Feb 8, 2009 | 08:17 PM
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Originally Posted by VinnyT
Stock engine - 35-45 psi at idle
lol yeah at idle!! lol stock!! thanks man!!! i forgot to add that!!! thankfully u were one step ahead of me!!!
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Old Feb 8, 2009 | 08:18 PM
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Believe it or not, GM claims the minimum allowed is 6psi @ 1000 rpm. I would not accept that, but they claim it is within tolerance.
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Old Feb 8, 2009 | 11:01 PM
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Hi There:
On my stock 01 at temp & doing 70 on the high way about 42psi -46psi
robsc501
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Old Feb 8, 2009 | 11:15 PM
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Mine is 42 psi ar 2200 RPMs
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Old Feb 8, 2009 | 11:50 PM
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60 during highway driving
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Old Feb 8, 2009 | 11:57 PM
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Originally Posted by soada101
what should the oil pressure be on a warm engine??? once you have already been driving on the hwy etc etc what should it be?!?!??! thanks!
Here is a clip from Jack Latham's page:
1.18) What should my oil pressures be?
With 5W-30 Mobil 1, the 2000 manual lists hot oil minimum specs at:
·6 psi at 1,000 engine RPM
·18 psig at 2,000 engine RPM
·24 psig at 4,000 engine RPM

So, if you are above those numbers, you are still just fine.

Oil filter you use can have an effect on presures somewhat - Mobil 1 filters are known to reduce pressure a bit versus the GM factory PF44 and PF46 filters.

There is a ton of useful info here you might want to take a look at it, I always enjoy the things listed on there - take a scroll

http://www.jakelatham.com/C5/misc/faq.shtml

Thanks,Matt
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Old Feb 9, 2009 | 03:11 AM
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Originally Posted by VinnyT
Stock engine - 35-45 psi at idle
That's about what mine was at idle.
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Old Feb 9, 2009 | 07:15 AM
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soada101... are you just inquisitive or do you think you have a problem?

The C5 is prone to oil pressure sensor failure. when it fails it reads 80 psi on the dash gauge and 130 ish on the DIC
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