oil pressure.. increasing?
oil pressure.. increasing? Since changing from 10w-30 to 5w-30 a few months ago.. I have noticed my oil pressure increasing. (not sure if the oil had anything to do with it.. its just thats around the same time i noticed this)
i used to be @ 45-50psi idle.. 65psi under full throttle
no im 55-60 idle.. 70-75psi full throttle..
also when I start the car in the cold morning... my pressure is 75psi.
car is a 98 LS1 M6.. 111k miles. never opened the motor.. no issues.. dyno'd 325rwhp with cat back, tune, no cats.. 4.10's
should I be getting worried that something is blocking the flow? sludge? anything?
i used to be @ 45-50psi idle.. 65psi under full throttle
no im 55-60 idle.. 70-75psi full throttle..
also when I start the car in the cold morning... my pressure is 75psi.
car is a 98 LS1 M6.. 111k miles. never opened the motor.. no issues.. dyno'd 325rwhp with cat back, tune, no cats.. 4.10's
should I be getting worried that something is blocking the flow? sludge? anything?
I'm guessing it wasn't the same brand of oil that you switched to. Even though you went from 10w-30 to 5w-30 the newer brand could certainly be thicker. Case in point, M1 5w-30 is thinner than German Castrol 0w-30. Thus, a thicker oil would certainly raise oil pressure. Again, only an assumption but that would explain it.
Ummm....Its the weather. 
I bet the ambient temps have significantly cooled, hence you notice the rise in oil pressure. Its totally normal. This is also very easy to observe on a car that has an oil temp gauge, like a C5.
I bet the ambient temps have significantly cooled, hence you notice the rise in oil pressure. Its totally normal. This is also very easy to observe on a car that has an oil temp gauge, like a C5. 
