Oil Pressure!! WTF?!?!?!
lol is alright to freak....the oil gots hot man when just idling....haha havent u noticed how high the oil pressure is when u start ur car in the morning...watch it drop as the motor starts to heat...its normal....**** i have been in 100deg. weather w/ ac runnin(GF in the car 
)...my pressure dropped to 28 
but jumped back to 40+ when i stared moving, ur alright 
)...my pressure dropped to 28 but jumped back to 40+ when i stared moving, ur alright I think the later oil pumps were better. When cold my will run at 60psi while driving. In hot weather it will run at 40-45psi at cruise. At WOT hot it will reach 60psi.
This is with 5w40 Euro Amsoil and a K&N Gold Filter.
This is with 5w40 Euro Amsoil and a K&N Gold Filter.
Thread Starter
Joined: Mar 2005
Posts: 1,678
Likes: 14
From: san antonio, tx
I am to the conclusion that it is probably my OPSU. It tends to jump back and forth a little. Now while im cruising it will sit at about 37psi. This still doesnt seem right to me. I got some "low" oil pressure readings when I went with Fram on my first oil change. Then change it to AC DELCO...still didnt liked it. The I went with K&N.....excellent oil pressure...never looked back. I think part number is KN# 2006.
Originally Posted by blkbird
I am to the conclusion that it is probably my OPSU. It tends to jump back and forth a little. Now while im cruising it will sit at about 37psi. This still doesnt seem right to me. mine does the same thing...perfect at start up , but when i drive for a while and come to a complete stop, it will fluctuate in between 30-40psi. but it will return to 40psi once i give it gas.
i was told it could be the opsu, havent changed mine yet though...im also going to try thr k&n filter first to see if it helps any.
Thread Starter
Joined: Mar 2005
Posts: 1,678
Likes: 14
From: san antonio, tx
It was running fine until yesterday afternoon. I had just changed my oil the friday before. Thats why it boggles me..... I always use the same oil and filter.
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BTW, my LT1 idled at 18psi and under WOT would go to about 55psi or so. It never had a problem as far as I know, that was with 15-40 Rotella T in it. Low, yes, ever sieze up or anything? No, had 170K on it when I sold it.
From what I have read I thought that 01 and later ls1's were equipped with the ls6 style oil pump. Maybe that was a rumor. Oh and I was wondering where is that OPSU? What did it cost? How long of an install?
Josh
Josh
Originally Posted by connexion2005
From what I have read I thought that 01 and later ls1's were equipped with the ls6 style oil pump. Maybe that was a rumor. Oh and I was wondering where is that OPSU? What did it cost? How long of an install?
Josh
Josh
You are completely overthinking everything. You oil pressure is perfectly fine where it is. Mine sits there on a daily basis. Never have a single issue. I feel its all about finding the right filter/oil combination for YOUR motor. Mine runs great on Napa Gold Filter and Castrol 10w-30. I tried a few other oils and have had oil pressure ranging from 20psi - 45psi hot. 40 psi - 60 psi cold and all these were effected only by changing oil and filter.
Thread Starter
Joined: Mar 2005
Posts: 1,678
Likes: 14
From: san antonio, tx
I am currently using a bosch filter and 10w-30 synthetic. I am going to try to put a kn filter in there and go back to the 0w-30 i used to run before and see if that makes a difference.
screen or some reason it can't get the volume of oil it need's
My oil pressure did the same thing at 38,000. Always ran just above 40 at idle, never lower. One hot day I saw it twitching around bad between 35-40.
I put 4000 miles on it in the past 2 months. Still runs just above 40 most of the time.
In every situation it still goes to about 65 when revved.
I just had my intake off to do knock sensors and seen the oil sender, thought of changing it but didn't.
While putting the intake back on I looked real good and I'm sure the sender can be changed without removing the intake.
I'm not worried because my 1992 silverado did the same thing, I put a mechanical gauge on it and it was fine. The gauge on that would freak out at idle a lot so i changed it and it's been fine since.
If the oil pressure reads steady low I might be concerned, but if the needle jumps around it's almost always a bad sender.
I put 4000 miles on it in the past 2 months. Still runs just above 40 most of the time.
In every situation it still goes to about 65 when revved.
I just had my intake off to do knock sensors and seen the oil sender, thought of changing it but didn't.
While putting the intake back on I looked real good and I'm sure the sender can be changed without removing the intake.
I'm not worried because my 1992 silverado did the same thing, I put a mechanical gauge on it and it was fine. The gauge on that would freak out at idle a lot so i changed it and it's been fine since.
If the oil pressure reads steady low I might be concerned, but if the needle jumps around it's almost always a bad sender.