oil pressure too high?
#1
oil pressure too high?
So I bought this 00 SS a month or so ago, ended up replacing the valve cover gaskets (they were leaking) found that inside the engine was gunked up some, not extremely bad but noticeable. So I ran some sea foam through it and changed the oil and filter with 10W30. Before this my oil pressure was at about 25 psi at idle and no higher than 60 while driving. Now I've got 40 to 50 psi at idle (engine warm) and close to 80 if you get on it. This seems like too much to me, so I changed the oil again, used a WIX filter instead of a fram and 5W30 oil, no change to the pressures. The gauge seems to be working properly and does not stick. Any info would be helpful.
#9
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yeah it's actually running right now.. the pressure shouldn't have been that low in the first place.
Actually I just noticed you said 80psi at WOT... isn't that in the red? That is pretty high alright. I'm sure others can chime in though
Actually I just noticed you said 80psi at WOT... isn't that in the red? That is pretty high alright. I'm sure others can chime in though
#11
it should never really fall below 40psi with 5w30...even in the summer after a long road trip i'll still be seeing 35+
as for the high pressure, you've got to go a long way to do damage with high oil pressure - think hundreds - the worst case senario in your case is a blown seal somewhere. all in all, its nothing to be worried about, with OP its all about higher is better
as for the high pressure, you've got to go a long way to do damage with high oil pressure - think hundreds - the worst case senario in your case is a blown seal somewhere. all in all, its nothing to be worried about, with OP its all about higher is better
#12
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I would say that the Seaform did its job also.. cleaned up the oil passage and Oil system.
My stock 99' LS1 with only a LS6 oil pump runs a bit higher than yours at idle and around 80 at speed. (gauge only goes to 80psi LOL).
I would not worry too much.. just watch for oil leaks at the front and rear seal.
My stock 99' LS1 with only a LS6 oil pump runs a bit higher than yours at idle and around 80 at speed. (gauge only goes to 80psi LOL).
I would not worry too much.. just watch for oil leaks at the front and rear seal.
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Lemme play devils' advocate for a moment.
Let's say that the seafoam broke free a piece of something that's now lodged in an oil passage somewhere, restricting flow.. You'd see more pressure across the board, since pressure is just resistance to flow..
OTOH, there's not much you can do about it anyway...so just drive it.
Let's say that the seafoam broke free a piece of something that's now lodged in an oil passage somewhere, restricting flow.. You'd see more pressure across the board, since pressure is just resistance to flow..
OTOH, there's not much you can do about it anyway...so just drive it.
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Lemme play devils' advocate for a moment.
Let's say that the seafoam broke free a piece of something that's now lodged in an oil passage somewhere, restricting flow.. You'd see more pressure across the board, since pressure is just resistance to flow..
OTOH, there's not much you can do about it anyway...so just drive it.
Let's say that the seafoam broke free a piece of something that's now lodged in an oil passage somewhere, restricting flow.. You'd see more pressure across the board, since pressure is just resistance to flow..
OTOH, there's not much you can do about it anyway...so just drive it.
Oh and oil pressure sounds good to me.
#16
Lemme play devils' advocate for a moment.
Let's say that the seafoam broke free a piece of something that's now lodged in an oil passage somewhere, restricting flow.. You'd see more pressure across the board, since pressure is just resistance to flow..
OTOH, there's not much you can do about it anyway...so just drive it.
Let's say that the seafoam broke free a piece of something that's now lodged in an oil passage somewhere, restricting flow.. You'd see more pressure across the board, since pressure is just resistance to flow..
OTOH, there's not much you can do about it anyway...so just drive it.
#17
40 at idle is about the norm for most LSx cars. Going WOT should see it hit 60's if not 70's. I just got complimented by the neighbours on a mean revving engine after I had done my oil change and was blipping the throttle and I had my eye on my PSI the whole time. I got it to blip a little past the 60 mark so probably in the 70's. Never seen 80 PSI though. I'll see what kind of PSI my Monte SS does but I suspect it's similar.
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...pressure guages are not accurate.
...Oil weight has an impact on pressure.
Also, if the last owner changed the faulty factory GM oil pump, and replaced it with a high pressure one, it might cause some of this.
...Oil weight has an impact on pressure.
Also, if the last owner changed the faulty factory GM oil pump, and replaced it with a high pressure one, it might cause some of this.