Oil Pressure!! WTF?!?!?!
12-07-2006, 11:56 AM
#21
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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 
12-07-2006, 05:53 PM
#22
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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.
12-07-2006, 06:27 PM
#24
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Oil filters can make a drastic change in oil pressure, but the only way to truely know your real oil pressure it to hook up a remote "wet" oil pressure gauge.
12-07-2006, 06:45 PM
#25
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.
12-07-2006, 07:00 PM
#26
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.
12-07-2006, 07:37 PM
#28
0-30GC, 76K miles on the motor, WIX filter, this is right after I swapped IAC's before it re-learned its idle, so its idling a bit high and all, but it NEVER EVER goes below a HAIR over the 40 line.
12-07-2006, 07:39 PM
#30
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.
01-22-2007, 10:19 PM
#32
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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
01-22-2007, 10:23 PM
#33
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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
01-30-2007, 10:41 PM
#35
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So what happens when you have good oil pressure at idle and while cruising...but when you rev it up under load the oil pressure drops rather than increases with RPM??????
12-13-2007, 08:16 PM
#37
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.
12-15-2007, 06:42 PM
#40
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.