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oil pressure

bobby5

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whitesnake01 Enthusiast

whitesnake01

Posted
Posted
8.1 liter

 

Cold idle - 60PSI

Warm idle - 20PSI

In town -  45-60PSI

Freeway - 60PSI

 

 

 

My DMAX is pretty much the same except warm idle is a hair higher (25PSI). My 454 has a narrower band. Goes to about 40PSI on the top and 25PSI on the bottom, usuallly stays at around 30 (with 15W50).

Mighty HD Senior Enthusiast

Mighty HD

Posted
Posted

04 sierra 1 year old

7150 miles

Mobil 1 5w-30 Syn.

Mobil 1 M1-206

 

Cold: 60

Driving while hot: 30-50

Hot Idle: 40

 

I'm starting to notice a very light CSK when I start it up now too. :D

  • 1 year later...
Burbman Enthusiast

Burbman

Posted
Posted

My '01 8.1L runs now at about 70 psi when cold...just started a couple of oil changes ago. Used to run at 60psi. Any ideas? Should I be worried?

dewfpo Senior Enthusiast

dewfpo

Posted
Posted
My '01 8.1L runs now at about 70 psi when cold...just started a couple of oil changes ago.  Used to run at 60psi.  Any ideas?  Should I be worried?

 

 

 

 

How many miles are on your oil filter?

 

Pressure sender could be going (higher resistance, etc...)

 

DEWFPO

Burbman Enthusiast

Burbman

Posted
Posted

About 1K miles on the filter. I stay with old-fashioned 5W30 dino oil and change oil and filter every 3K miles, sometimes sooner.

BlackSilver Senior Enthusiast

BlackSilver

Posted
Posted
What kind of oil pressure are you guys getting when your truck is warmed up in gear?  What kind of motor is it?

 

 

 

 

03 6.6L Turbo Diesel, 110,000 miles, Rotella-T 15W-40

 

Cold idle 60/75 PSI (Summer/winter)

Hot idle 30 PSI

Hot 'on the road' 60 PSI

 

Below zero cold 'on the road' can go as high as 90 PSI (which is why you don't put bargain-priced oil filters on a northern DuraMax -- the pressure will split the thin aluminum ones).

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