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Oil pressure????????????????

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Old May 3, 2008 | 10:07 AM
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Cajun @ Edgyvette's Avatar
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Default Oil pressure????????????????

I had H/C installed and now my oil pressure seems to be suspect. It is around 50 psi cold 80-120 degrees but only mid 30s from 120-170 degrees.

Now what worries me is that it is 24-26 psi at 180-200 degrees at idle and around 30-35 at 2k RPM. I have a ported LS6 oil pump. I am using Walmart brand 5w-30 full synthetic with a Walmart brand oil filter. This is the oil and filter I have always used and dont remember the pressure being this low, but truthfully have never paid super close attention to it. What do you think?

Cajun
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Old May 3, 2008 | 11:44 AM
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CODE4LS1
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Sounds like a pinched or torn o-ring to me. Tore it all apart and changed it with a new o-ring and it solved the problem.
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Old May 3, 2008 | 04:32 PM
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Originally Posted by CODE4LS1
Sounds like a pinched or torn o-ring to me. Tore it all apart and changed it with a new o-ring and it solved the problem.
Called my tuner, he said his PSI is about the same so must just be the hot temps and 5W/30 oil. I am thinking about changing over to 10W/30 for the summer.

Cajun
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Old May 3, 2008 | 06:43 PM
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Cajun
Thanks for the advice on my long vs shorty headers thread. My 99 vert also has a low oil pressure reading and I'm bone stock...around 4o's cold, 30's warm, and I dip down into the 20's and have seen some teens at idle hot...ran a thread on here and got mixed reviews. some guy even said that for a healthy vette all you need is 10 psi for every 1000 rpm's. sounded like b/s to me. with all the advice i got no one seemed to answer the question on low psi's other than oil change, sender relocate, and torn o ring could be the cause. good luck and I'll be following this thread to see if anyone actually provides sound advice towards the problem...
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Old May 3, 2008 | 07:34 PM
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Originally Posted by ccajun4real
Called my tuner, he said his PSI is about the same so must just be the hot temps and 5W/30 oil. I am thinking about changing over to 10W/30 for the summer.

Cajun
10w30 isnt going to do much but be a little thicker when cold. If you want to go thicker while at operating temp then go with a 10w40. This is what I run in the summer in all my cars because of the extreme heat here in AZ.
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