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6.0 Normal Oil Pressure

big den

By big den
in Ask A GM Technician

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big den New Member

big den

Posted
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I currently have a 02' hd2500 w/6.0 auto w/233,000+ miles on it. when you first start the truck up the oil pressure jumps right up to about 40 psi but it stays there even when driving at highway speeds until engine warms up then it will show about 60 psi and the pressure will move up and down accordingly with stopping and highway driving. is this normal or maybe a bad pressure switch? there is no taping or other noises (other than the normal 6.0 piston skirt rattle at start up) truck runs great. any help or advice would be greatly appreciated. thanks

ATMINF Enthusiast

ATMINF

Posted
Posted

On both of my trucks with the 6.0 gasser the pressure would be a little over 40psi, and the only time it would rise, is under throttle. At regular HWY speeds 75-80 mph the pressue is in the 40s.

Genuinefine409 Enthusiast

Genuinefine409

Posted
Posted
I currently have a 02' hd2500 w/6.0 auto w/233,000+ miles on it. when you first start the truck up the oil pressure jumps right up to about 40 psi but it stays there even when driving at highway speeds until engine warms up then it will show about 60 psi and the pressure will move up and down accordingly with stopping and highway driving. is this normal or maybe a bad pressure switch? there is no taping or other noises (other than the normal 6.0 piston skirt rattle at start up) truck runs great. any help or advice would be greatly appreciated. thanks

 

 

my '02 6.0 has 157,000 miles and is 45-50 at idle and 65-70 going down the road. when i come back to an idle its goes back to 45-50psi again.

big den New Member

big den

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Posted

Thanks for the input. the oil pressure will stay at 40 psi even at highway speeds until the truck warms up, never had a truck do that before usually the pressure is higher on start up.

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