Driving With High Oil Pressure?

[jro909]

does hopping into a cold vehicle and driving with the oil pressure pegging out cause any issues? for example higher oil consumption,premature wear or leaks?

[oldschool327]

Could blow seals and gaskets. Have you changed oil wieght siince it is starting to get chilly up in the north? Sounds like too thick to flow cold.

[Doug_Scott]

Could blow seals and gaskets. Have you changed oil wieght siince it is starting to get chilly up in the north? Sounds like too thick to flow cold.

 

 

Tell us which seals or gaskets would be exposed to this high oil pressure and would fail. The oiling system has a pressure relief valve in place to limit the max oil pressure. No need to worry about stock oil pressure being too high. I would be more inclined to believe that the stock gauge is not all that accurate.

[oldschool327]

"Could" is often mis-understood by simpletons.

 

The front main and rear main would be my concern. OP states the gauge is pegged out. My first concern would be to verify the gauge accuracy. As for those pressure relief vavles; they are just that, valves, and they do fail on occasion.

[jro909]

i'm going with a what if scenerio, my guage reads 40 psi or so which is normal...i just know alot of folks hop in and go when its dead cold outside and i'm guessing the psi is pretty high in the guage with thick cold oil...

[txab]

The concern would be with lubrication getting to critical bearing surfaces, if your oil is too thick at start-up and not flowing well.

[Baja 252]

The concern would be with lubrication getting to critical bearing surfaces, if your oil is too thick at start-up and not flowing well.

 

We have a winner!!!

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+2 for txab!

[jblakeney]

Define high oil pressure. 40, 50, 60, 70, 80, ......????

 

Jbo

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40.1 PSI

[jblakeney]

40.1 PSI

 

Hahaha, I am happy with that on idle. 60 makes me happy off idle.

 

But 7lbs per 1000rpms is what I have already heard, is enough to not worry about anything.

 

Jbo

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My truck won't go up but to around 60. It used to would go to 80, but now it won't.

[kdixer]

My truck won't go up but to around 60. It used to would go to 80, but now it won't.

 

 

Darn non AFM engines....

[az'03Silverado]

We had an old '80 Buick regal that got way high oil pressure. Turns out the push-rod tubes were clogged and the oil wasn't even getting to the rockers. So, if it's way high and it isn't because of the temperature outside, I'd look for a clog somewhere.

[Doug_Scott]

We had an old '80 Buick regal that got way high oil pressure. Turns out the push-rod tubes were clogged and the oil wasn't even getting to the rockers. So, if it's way high and it isn't because of the temperature outside, I'd look for a clog somewhere.

 

What is "way high"? It is not unheard of for the oil relief spring to be set to around 100psi. Plugged push rods would not cause any issue other than increased wear on the seats of the push rods in the rocker and rocker pivot wear. Any increase in oil pressure you saw was minor in relation to the damage the lack of oil was causing. Areas like the openings in push rods are controlled leaks in the oiling system. There are lots of these "controlled" or designed leaks in an engine.

 

I am just waiting for someone to complain that the high oil pressure is causing them to lose fuel mileage.