oil questions (cooler, gauge's some other stuff)

[KGB Pilot125]

just getting ready to put in my oil pressure gauge wondering what kind of pressure I should see whats high, whats too low where should I start to worry. what about oil temp I got a B&M cooler but it looks like there is already one on mine looks exactly the same as a B&M drivers side in front of the rad.

 

[RamenPride]

90-91's came with air to air intercoolers.

i see 60psi at 3000rpm. 1G owners typically report near 80psi at that rpm, so i'm not sure if there's a difference between 1G and 2G or what.

 

[larryd]

i have a 6 bolt with a 91 oil pump.. at idle Im seeing about 30psi.. at WOT im going all the way up to 120psi, at cruise its around 90psi.

 

[cmc]

Larryd, are you running the water cooling system, or the air cooled?!

 

[RamenPride]

Originally posted by larryd
i have a 6 bolt with a 91 oil pump.. at idle Im seeing about 30psi.. at WOT im going all the way up to 120psi, at cruise its around 90psi.

30psi at idle! what weight oil are you using? all those numbers seem really high

 

[Tevenor]

30 at idle is incredibly high for out engines. They tend to run 14-18psi at idle.

I swapped out the water cooled one for an air cooled on my 96 with the 6-bolt block to get better cooling and to eliminate contamination between coolant and oil. Damn honeycomb oil coolers.

 

[Agent Ezzard]

oil pressure will also depend on the weight oil you're running. 20w50 users should have a higher oil pressure

 

[larryd]

yes.. im running 20w-50 to keep up the oil pressure from when I was having oil pump problems.. Im going to be changing to 10w-30 next time I change the oil.

 

[Agent Ezzard]

yeah, this week im changing timing and balance shaft belts, water pump, clutch, rear main seal, all belts, brake fluid, and oil. im still debating on what other oil to use. i've been through mobil1 10w30 and castrol 20w50. so far i like the mobil1.

 

[RamenPride]

Originally posted by larryd
yes.. im running 20w-50 to keep up the oil pressure from when I was having oil pump problems.. Im going to be changing to 10w-30 next time I change the oil.

good move. if anything, 20W-50 might cause oil pump problems

 

[madmax]

That does seem awful heavy for this time of the year LarryD. I'd get that stuff out and go with 5W-30.

 

[larryd]

uhm.. i would never go with 5w-30 again.. i had like no oil pressure with 5w-30.. 10w-30 is the lightest im ever putting in there again.

 

[RamenPride]

Originally posted by larryd
uhm.. i would never go with 5w-30 again.. i had like no oil pressure with 5w-30.. 10w-30 is the lightest im ever putting in there again.

yeah, I'd never run 5W-30 either. I use 10W-40, but not too many major manufacturers (ie. Mobil, Pennzoil, etc.) make a synthetic in that weight.