Therealmike
Newbie
So I have 1997 Chevy Silverado k1500 5.7L it use to run 35 psi idle and 45 when driving after I changed the oil to 10w30 and new oil filter all of a sudden it runs at 70psi and when accelerating it goes to 75 psi is this safe?
Oil pressure high?
- Thread starter Therealmike
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redfishsc
Tired of fixing lousy engineering.
If it stays 70psi at a hot idle, I'd suspect something is causing a blockage upstream from the pump.
Biggershaft96
Cant Getrite
Try hooking a mechanical gauge up just to make sure the sender or gauge isnt malfunctioning.
Urambo Tauro
I'm Awesome
You mean downstream?
redfishsc
Tired of fixing lousy engineering.
I suppose. Blockage downstream would be low oil pressure, either way thats bad news
Dan_Frisbie
OBS Enthusiast
Even if something was blocked, I doubt that you would see any measurable increase. New, different oil and filter can account for some rise, but with the extreme change that you're seeing, I suspect a bad sending unit or gauge.
Did you do the last oil change?
If not, I know there is some talk in certain areas about 0w-20 giving better gas mileage (I would never do that!). Maybe the previous owner threw that in last time? Or it was so old and deteriorated that it lost some viscosity?
If not, I know there is some talk in certain areas about 0w-20 giving better gas mileage (I would never do that!). Maybe the previous owner threw that in last time? Or it was so old and deteriorated that it lost some viscosity?
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