What is the correct oil pressure at 4000 rpms
It vaires with model, but if you have 25 at idle hot it is ok, if it is about 40 at freeway speeds it is good to go.
SOURCE: Chevy 350 - oil pressure drops at high RPMs
good evening and welcome to fixya
sounds like you might have an issue with your oil pump losing pressure. if there are no rattles knock or clangs and the engine is not burning oil, make sure to check the dipstick for signs of a glittery metal substance that could be signs also of the engine having issues then the pump is probably your issue. there is a spring inside the pump that you can actually take out and change for a heavier spring that would actually stop this but it is easier to swap in a new oil pump. i do have one question for you though, is this correct an s-10 blazer with a 350 in it? if so has the engine been built at all or is it stock? once you swap the pump go back to running a 10w 40 oil the motor will run better on that and easier, yes your right though the heavier oil does help but if everything is good then it will hender power unless the engine is fairly well built. let me know and i will help you solve your issue. thnak you
SOURCE: cant find the location of this oil pressure switch on my 1999 gmc savana 1500 van with a 350 engine
very rear of engine center of block behind intake.
SOURCE: what is the correct oil pressure for a chevy 2000
0 psi to 80 psi at idle 20 to 45 psi give or take theres no correct oil pressure only if you see your oil gauge flexb between 10 psi to 80 psi
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