On my Firebird (3800 V6 Series II), I've noticed that the oil pressure gauge barely fluctuates at all. When the engine is completely cold, it's at about 70 psi. When fully warmed up, it's at about 60-65 psi. It doesn't seem to matter whether I'm at idle or if I'm on the highway going 70mph. I always thought at idle it should be much lower than that? I'm using an oversized Mobil 1 M1-201 on it, but I'm not sure if that would cause it to act like that or not. It's my first car with an oil pressure gauge, so I'm not sure what to expect. I can get it to fluctuate ever-so-slightly (in-line with the revs) if I'm accelerating... (maybe a 5 psi difference), but it eventually stabilizes right back to where it was. It's always between the 60-70psi range. Here is a picture of it at hot idle. It's covered up a bit, but the middle number on the gauge is "60"
Does that seem normal, or should I be concerned? I'm guessing the gauge is just a bit flaky, but I thought I'd ask here so as to not do any damage to the engine.
Does that seem normal, or should I be concerned? I'm guessing the gauge is just a bit flaky, but I thought I'd ask here so as to not do any damage to the engine.