what exactly does oil pressure tell me?

1jimmy__d · 05-03-2003, 11:39 PM

i was just curious becasue the 90 lx i have i have the pillar mount with water temp, oil pressure and volts. I know what the other two are, but not the oil pressure. It ranges anywhere from 38 to 80. When I first start the car it goes to about 80, then falls down a little to 60, then I drive it and it goes up some more as my rpm's go up. Then I stop and idle again and it is at 38 . What exactly is this telling me, and are do these numbers sound OK? Thanks

Jim

dragstang86 · 05-04-2003, 09:52 AM

Thats definately plenty of oil pressue. Considering my car idles cold at 45 to 50 and is about 22 or so at idle when the oil is hot. The hotter the oil gets the lower your oil pressure will be because it becomes thinner when its hot. The heavier weight oil you run the more oil pressure your going to have. But you have plenty of pressure.

Chevyguy · 05-05-2003, 03:44 PM

The oil pressure gauge measures your OIL pressure in the engine

High is good low is bad, zero means the motor will sieze. Anything below 15 - 20 psi hot at idle is too low. 10 psi per 1000 rpm above that is a rule too.

05-03-2003, 11:39 PM	#1
1jimmy__d Registered Member Join Date: Apr 2002 Posts: 299	what exactly does oil pressure tell me? i was just curious becasue the 90 lx i have i have the pillar mount with water temp, oil pressure and volts. I know what the other two are, but not the oil pressure. It ranges anywhere from 38 to 80. When I first start the car it goes to about 80, then falls down a little to 60, then I drive it and it goes up some more as my rpm's go up. Then I stop and idle again and it is at 38 . What exactly is this telling me, and are do these numbers sound OK? Thanks Jim __________________ 90 lx hatch, holley systemax II kit, rebuilt 302, BBK 155 lph fuel pump, pro M bullet mass meter wtih BBk cold air intake, 30 # injectors, 70 mm TB, jacobs ignition system, edelbrock water pump, BBk longtube headers with h-pipe, flowmasters, b&m ripper shifter, 3.55 gears, Proform electric fan, subframe connectors/removed smog pump and ac! 75 shot of nitrous! 13.2 at 112 1/4 mile- no traction!

05-04-2003, 09:52 AM	#2
dragstang86 Registered Member Join Date: Sep 2002 Location: baltimore, md Posts: 220	Thats definately plenty of oil pressue. Considering my car idles cold at 45 to 50 and is about 22 or so at idle when the oil is hot. The hotter the oil gets the lower your oil pressure will be because it becomes thinner when its hot. The heavier weight oil you run the more oil pressure your going to have. But you have plenty of pressure. __________________ 90 LX Hatchback 306, AFR 165's 58cc, E303, 1.6 roller rockers, 70mm throttle body, cobra intake, bbk fenderwell, bbk longtubes, x-pipe, flowmasters, pullies, msd 6a, crane ps-92, stock MAF sensor, electric fan, No AC, No air pump, flaming river quick ratio rack C-4, 3500 stall, 373's, aluminum driveshaft SSM Lift bars, , sub frame connectors, strut tower brace 12.57 @105.12mph w/ 1.686 60ft before bbk longtubes (with equal shorties) ----------------------------------------- 86 tube chassis coupe - the trailor queen

05-05-2003, 03:44 PM	#3
Chevyguy Backyard Mechanic/Chemist Join Date: Feb 2001 Location: Acton MA USA Posts: 435	The oil pressure gauge measures your OIL pressure in the engine High is good low is bad, zero means the motor will sieze. Anything below 15 - 20 psi hot at idle is too low. 10 psi per 1000 rpm above that is a rule too. __________________ 2001 Crown Vic Maurader Airbox/MAF, DR chip Edel IAS shocks Single exhaust :wtf: 93 P-71 Vic interceptor Backup car now 90 5.0 LX Notch SOLD 74 Chevy Laguna type S-3 454 under construction Currently apart undergoing bodywork.

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