87 5.0L SD oil pressure problems????

[tlancer]

ok so i have been noticing that after i have been driving, or when the motor is warmed up im showing almost no oil pressure. when i start it up first time its good, i think like 50ish psi....but after its warm when at idle it shows nothing.... when driving anytime im still showing 20ish. psi....but anytime i stop at a light or something it drops. motor dont sound any different. or act diff.. idk alil help plz lol.

 

[ID89GT]

Is this the stock gauge or an aftermarket one?

 

[Onefine88]

Now I'm not saying that you don't have a potential problem but:

I've owned my '88GTvert since new. It has always registered low, down on the "L" in normal on the stock guage.

 

[FastDriver]

has your car run hot at any point? If so, you might have "cooked" the oil. This causes a corresponding loss of pressure. Try some new oil out if it's the case. If not, and you are still getting oil pressure with increasing RPM, and everything sounds fine, I'd let it go and keep driving it.