Jump to content

Oil pressure about 20 and 17

Steve_rayan
 Share

Recommended Posts

Steve_rayan Enthusiast

Steve_rayan

Posted
Posted

Hi dears ,

 

i have a 2018 Yukon, and i just noticed the oil pressure is about 20 on idle (full stop) .

 

on accelerating the oil pressure go up to 50 and arround it.

 

please should i worry about it or this consider normal?

 

OD is 55k km .

6BC04847-E872-4A9C-8BDB-57E8CD33D382.jpeg

newdude Senior Enthusiast

newdude

Posted
Posted

Normal especially if its up to temp and running for a while.

 

Are you getting any messages on the dash like low oil or low oil pressure?  Check engine light?

newdude Senior Enthusiast

newdude

Posted
Posted (edited)
8 minutes ago, Steve_rayan said:

Thanks newdude ,

 

the outside temperature is 100f now and no i don’t get any warring on the dashboard 

 

 

Sounds like its working fine then.  100F outside so everything is hot so the oil temps are probably a touch higher than normal but still in a safe zone, hence the slight dip in hot engine oil pressure.    

Edited by newdude
Steve_rayan Enthusiast

Steve_rayan

Posted
  • Author
Posted

Thanks, I really appreciate your reply.

 

Please advise what is the normal operating range for the oil pressure.

 

and what is normal for the 100F and above weather?

 

also can you please be kind and explain the relation between the outside weather and the oil pressure readings.

 

Thanks in advance :)

TxVet33 Enthusiast

TxVet33

Posted
Posted (edited)
46 minutes ago, Steve_rayan said:

Thanks, I really appreciate your reply.

 

Please advise what is the normal operating range for the oil pressure.

 

and what is normal for the 100F and above weather?

 

also can you please be kind and explain the relation between the outside weather and the oil pressure readings.

 

Thanks in advance :)

The ambient temp causes the engine to heat up a little faster. It might cause the engine operating temp to read a little higher in some places like Iraq or Kuwait.  That’s the only relationship.   Once the engine is “heat soaked” it might read higher in some climates but just a few degrees.  U might or might not see the difference.  IMO.  But who am i

Edited by TxVet33
Me
newdude Senior Enthusiast

newdude

Posted
Posted
20 hours ago, Steve_rayan said:

Thanks, I really appreciate your reply.

 

Please advise what is the normal operating range for the oil pressure.

 

and what is normal for the 100F and above weather?

 

also can you please be kind and explain the relation between the outside weather and the oil pressure readings.

 

Thanks in advance :)

 

 

Well, GM just has a minimum spec of 6 psi per 1000rpm.  So if your engine was say stuck idling at 1000rpm, 6psi is the bottom of the barrel.

 

Typical operation on these trucks, 20-30psi at idle, 38-42psi cruising.  40-50psi under 3500rpm acceleration.  Anything over 3500rpm the oil pump moves into the high pressure stage and the gauge can jump up to 60+psi.  

  • Thanks 1
Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
4 hours ago, newdude said:

 

 

Well, GM just has a minimum spec of 6 psi per 1000rpm.  So if your engine was say stuck idling at 1000rpm, 6psi is the bottom of the barrel.

 

Typical operation on these trucks, 20-30psi at idle, 38-42psi cruising.  40-50psi under 3500rpm acceleration.  Anything over 3500rpm the oil pump moves into the high pressure stage and the gauge can jump up to 60+psi.  

 

Good to know mine is 'normal' A bit over 30 hot idle, 38-40 cruising (55 mph 3.23 gear, stock tire) . 45-55 spirted under 3500 and pegs the gauge near red line. 

TxVet33 Enthusiast

TxVet33

Posted
Posted

If 0-20w is the issue. What is everyone running in their 5.3’s?   Mine in my ‘19 Yukon  doesn’t have a 30psi difference. Mine at most has a 10psi difference???  MIne idles at 550 rpm.  At speed mine reads 50psi.  

Steve_rayan Enthusiast

Steve_rayan

Posted
  • Author
Posted

We have an extreme weather, it’s reaching 55C and under direction sun is 65C 

 

that is why most of the owners not using such oil .

 

however the local dealer keep using it .

 

 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted

Oil viscosity vs oil temperature 

 

VISTemp.png.d712c69d4c6474983c2685029bb450aa.png

 

3 or cSt in viscosity will not show on a dash gauge. 

 

Remember these trucks use the water cooling system to cool and heat the oil. Even if the water temperature is 10 C higher this results in but a 3 or 4 cSt change in viscosity. If you think you really need more viscosity protection find a suitable synthetic 0W20 or 5W20 with a HTHS of 3 cP or better. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • asilverblazer
      Intermittent no-code issues on 2022.5+ V8 trucks — what did the shop fail to capture?

      By asilverblazer · Posted

      Yes.   Yes.   We might be intermingling ideas with the term 'severity', in one of my past vehicles it could pull up DTC via the vehicles own user interface, at any given time when one would do this there would be an assortment of codes that were 'trivial' including 'communication' issues. This would generate a bunch of, potentially false alerts or some many that they would get ignored. Which you mentioned earlier.    You also mention several things that might be redundant with the vehicles own systems or indicators: The truck has an oil pressure gauge, monitoring it via this other system wouldn't be a priority except in comparison to other values or if there is an actual oil pressure problem.   Same thing for miss-fires or other problems, the MIL already signals the operator to an issue...   ...to the point about what one wants to see first, if there is a miss fire detected, I want to see miss fire counts or fuel trims first, if I have an oil pressure problem I want to see the oil pressure first. So, perhaps the 'systems' that are showing abnormalities are what gets displayed first.   I think your device is what connects at the OBD port, ease of use for the consumer, it could still have a 'pass-through' port for a second scanner, computer, etc.   Yes.   Based on my comment above, if an error appears, the report would be more specific to the system having an error.
    • RyanbabZ71
      Gas Prices

      By RyanbabZ71 · Posted

      Saturday 87 was 2.98 at the local meijer when I filled up my car with 93.
    • RyanbabZ71
      Slate Electric Truck

      By RyanbabZ71 · Posted

      I like the idea.  I thought about putting a deposit a few years ago when they first dropped.  I still want to drive one and have inquired about doing this with them, like a ride and drive event they said they are coming but it hasnt happened even with them built in Indiana.  
    • asilverblazer
      Transmission Woes :-(

      By asilverblazer · Posted

      That's a tough spot to be in, I personally would question spending 1/2 the book value on a repair vs. selling it as-is.    Presuming you own it out right, sell it for 10k and have a down payment for a replacement truck, or spend 10k on the one you already have...   I still think there is a cheaper transmission out there via recyclers, aftermarket or rebuild. (Cheaper than 5k for the unit)
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Sadly, there's a drought of good 92-95 4.3 cars at junkyards in the area otherwise I would have gone fishing for parts. Not that they don't come up, there's just nothing good in the yards right now.   I tore into the intake yesterday evening, easier than I thought, and I might have this problem licked for cheap. Two of the intake studs came up with the bolt on removal, no big deal but that's why it looks funny with studs only on one side.   There's pooled gas on both sides of the plenum. Highlights boxed in green. Picture-right side has an obviously split pressure line from rubbing on the #5 injector nylon line. #5's line is worn in that spot but not all the way through. Passenger side intake (picture left), not sure, but I think the pressure regulator is hosed. Rebuilt spiders don't come with the pressure and return hoses so I'll need to replace those no matter what. A pressure regulator is $30 so I'll try that and if I end up having to swap the whole spider, it was $30. I'll be grinning ear to ear if that's all I need.   Parts arrive Tuesday.   Sure enough the shop was here before. That's a new gasket. Vacuum lines and wiring are a tangled mess, I sorted that out last night as well. Spent about an hour just picking up general slack and shoddy reassembly around the engine bay. Cheek-pokered the battery tray, got it all cleaned up. Sometimes things just need a little elbow grease and a few minutes of time to be right again.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...