The truck has spent most of it's life in Virginia/Tennessee. I am currently in Nashville Tennessee. I have been using Pennzoil 5W-30 High Mileage in it since I got the truck. I started seeing this occur this summer so it's been about 80 90 degrees outside. I got the truck last December and it...
After I turn off the vehicle the oil gauge will stay at about whatever it was when the engine was running. When the engine is off and I turn the key to the on position the gauge will reset and be at zero then it will go to a little over 40 when I start the engine.
No, I've never had any problems with the oil pump. I'll definitely look into the manual gauge to see if I am getting accurate readings though. Thank you!
I have 2001 GMC Yukon SLT 5.3L. When I first start it in the morning and accelerate the oil pressure gauge will increase pass 80psi. After running for a while it will come back down to 40psi at idle and a little under 60psi when accelerating. Is this cause for concern or sign of something I...
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