Well i was driving the car today and noticed that my oil pressure was sitting lower then usual. At idle the car is right around 20psi and then cruising at a normal speed it sits right about 30psi and then when i get into the throttle it shoots to 40psi. Is this something to be worried about? I thought they usally sit right around 40psi normally and then shoot up above that at WOT? What do you guys think it could be? I replaced the sending unit not to long ago so i dont think that is the problem.

 

Anyone?

 

A general rule of thumb is 10psi per 1000 rpm. So 20 psi should not be of concern at idle. Just make sure you have sufficient rpm at redline...

 

Do you think running 5w-30 vs 10w-30 would cause lower oil pressure?

 

it would be lower at operating temp. but the same at start up from what i understand. mine sits at like 50 psi at idle and at wot it is 80+. so to me it seems kinda low.

 

mine runs at about 60+ on startup, 25 at operating temp., and about 40-60 on wide open

 

How much oil pressure did you use to have? How long ago since you did the cam? Change oil pumpes? Change timing chain?

I would say 40 under wot is low. You can say 10psi for ever 1k rpms but on our cars its usually more than that.

 

I agree. 40psi is to low for WOT runs. sounds like your oil pump my be starting to go out on you. is it the original or aftermarket?