oil pressure

[ChevyCowboy]

what is the oil pressure on a 6.5 supposed to be mine os running at around 40 or maybe a little higher and some times a little lower i think that i was running lower like under 40 a mark or two im wondering if the dent in my oil pan cause by my reset destruction may have bent the pick up to or somehow restricted oil flow any ideas

[1999GMC]

Mine is a little over 60 at start up. And then when it warms up it is about 25-30 at idle and 40 or a little over at cruise.

[JD_countryboy]

below freezing mornings could be as high as 80. normal crusin when warm around 40-50, super high rpm's 60 psi or so. idle 40 psi give or take outside temp and engine temp.

[ChevyCowboy]

so if that is the normall opperating range y has mine been so low all this time its cold here now and i had expected it to be higher but untill the other day it had been low

[rodgera]

Mine runs at 40 Psi plus a little while driving under normal circumstances. At idle it drops down to about 30 Psi also going down a grade it drops down too. Mine is sluggish in cold weather to come up and the engine is loud until the pressure settles in at 40. THis usually takes a minute or two but you can definately hear it. The colder the weather the longer the loud engine.

[RS_91CAMARO]

When My Truck Is Warm At Idle The Oil Pressure Guage Reads Just Above The Red Mark I Figure As Long As It Dosent Go Into The Red Im Ok?

[JD_countryboy]

I once used Motor Coat 100 in my s-10. had 130,000 miles on it. At idle with 15w40, i never ever had less than 40 psi oil pressure. Once i put that crap in, 40 was most it ever made again, SAE 30 oil, below freezing temps outside. warm idle it was 0 oil presure light was always comming on at idle. stayed like that even after i immediatly changed the oil. Oil with motor coat was only in less than 100 miles, but the effects were long noticeable.
If your pickup tube got bent or restricted, your oil pressure would drop. Maybe your oil pressure sensor is getting bad, or your dash gauge could be a bit off. Or as somepeople have noticed on other sensors, if its not an OEM AC delco, it doesn't seem to be calibrated the same so it throws off gauge readings. Yours ever been replaced?

[ChevyCowboy]

not that i know im pretty sure that i now have a bigger oil leak i have to add oil about every other day but thats getting fixed the old owner said it had 15-40 in it im wondering if that was correct ( a lighter weight oil should show less presser right?) and now that i have fazed all that out with rotella 15w40 that it is causeing the higher readings? sound posible at all. the old owner said he had just done an oil change so i didnt bother normally i change that kinda stuff after i buy a truck so i know whats in it. but all the fluids are getting changed here this weekend got todrop the t case and tanny ill do the diffs later

[torque454]

I once used Motor Coat 100 in my s-10. had 130,000 miles on it. At idle with 15w40, i never ever had less than 40 psi oil pressure. Once i put that crap in, 40 was most it ever made again, SAE 30 oil, below freezing temps outside. warm idle it was 0 oil presure light was always comming on at idle. stayed like that even after i immediatly changed the oil. Oil with motor coat was only in less than 100 miles, but the effects were long noticeable.
If your pickup tube got bent or restricted, your oil pressure would drop. Maybe your oil pressure sensor is getting bad, or your dash gauge could be a bit off. Or as somepeople have noticed on other sensors, if its not an OEM AC delco, it doesn't seem to be calibrated the same so it throws off gauge readings. Yours ever been replaced?

If the oil is too thick in cold weather conditions it can damage bearings. That may be why your oil pressure suffered and never recovered.

[JD_countryboy]

I did the motorcoat experiment in July. Went to the sae 30 at second oil change afterward to try and add oil pressure, barely helped. I swapped that engine out at 165,000 miles for an engine that i rebuilt and added Edlebrok performance parts too, and bored out the throttle body. WOW does it SCREAM now. Old engine didn't seem to show any signs of excessive wear, woulda rebuilt it but couln't afford to park the truck for 2 or three weeks while machine shop had the block and i was rebuilding. So I got a longblock assebly from a friend who had it from a van, engine spun #1 rod bearing, swapped with a junkyard engine, he kept the old one.

[rodgera]

I changed my OPS because it was leaking oil and consequently overall pressure. It made quite a difference in the gage because now I run over 45 with a warm engine and rarely go below about 35 at idle. At start up it goes to 60 easily. I also notice that the banging noise that most people attribute to new injectors is far less now. I felt that the fuel pressure wasn't there because of a faulty OPS and I think I was right. Think about it this way, if the pressure is low the lift pump won't react quickly enough to feed the engine the necessary flow of fuel yet at the same time the engine is running requiring a certain amount to keep running so consequently some injector someplace is being starved until it catches up. This takes time and in my case the banging eventually goes away in a couple minutes. My opinion, anyone elses?:)