CK5
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oil pressure
- Thread starter foolhardy
- Start date
NewUser
1/2 ton status
typical rule of thumb is 10psi for every 1000rpm the engine is running
my new crate engine with a stock oil pump in it idles in gear at operating temp at 45 psi and pegs out the factory 60psi gauge between 2500-3000 rpm
my new crate engine with a stock oil pump in it idles in gear at operating temp at 45 psi and pegs out the factory 60psi gauge between 2500-3000 rpm
My oil pressure runs a little low for my liking too, but it has never dipped below 10psi.
Oh wait it did yesterday!
After about an hour drive up the highway with no overdirve roaring at 3000rpm... My engine is getting pretty tired and needs an oil change so that might be part of it. So for now I threw in some Lucas and now the oil pressure is around 7psi higher than normal. But with normal use, the oil pressure is around 10-15psi at idle and 20-25 while cruising.
Also what kind of oil do you run in there and what is its viscosity?
Oh wait it did yesterday!
After about an hour drive up the highway with no overdirve roaring at 3000rpm... My engine is getting pretty tired and needs an oil change so that might be part of it. So for now I threw in some Lucas and now the oil pressure is around 7psi higher than normal. But with normal use, the oil pressure is around 10-15psi at idle and 20-25 while cruising.Also what kind of oil do you run in there and what is its viscosity?
dauntless_powered
Newbie
i run 45 psi all the time
NewUser
1/2 ton status
right now im running 20w50 store brand oil and filter in mine but that was only for breakin im going to change it next weekend to Royal Purple Synthetic 10w40 and an AC Delco PF1218 filter
dauntless_powered
Newbie
that 45 psi is with my 305 and 10w30
You have plenty of oil pressure.
And no, low oil pressure isn't generally caused by the pump. Its generally caused by bearing wear.
And no, low oil pressure isn't generally caused by the pump. Its generally caused by bearing wear.
mrdrinksalil
1/2 ton status
My 95 Grand Cherokee daily driver will Idle at around 10 psi when shes all warmed up, especially toward the end of the oils life. When the oil is cold the pressure is much higher. Since it has over 200K miles on it im not too worried about it. I've used Penzoil high mileage in it since I got it at 135k miles. Every once in a while I put a quart of lucas in it and usually thickens things up to give me higher pressure numbers. I do have to say though, when its hot as h*ll out here in Atlanta and im idlin at a stop light, im always lookin down at that pressure gauge ... hahaha
