My oil pressure i my truck is running about 20psi while cruising but at Idle it is almost redlining (around 5 psi) and it says oil pressure low on the display screen but there is no check eng. light. I just changed the oil about 750 miles ago. I checked the oil and it has plenty of oil and the truck is running fine. Could it just be the gauge is going out ( 95k miles on the truck) or something else? Any thoughts or suggestions? Thanks - D.R.
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