I am having strange oil pressure issues with my trooper. When the engine is cold my pressure is great, then after about 20 miles of driving, the pressure drops, sometimes to zero when I come to a stop, but comes up while driving. I check oil, and I have oil on the Full mark on dipstick. This is greatly affecting my Gas Mileage.
One person suggested cam bearing issue, another, oil lifter (?). Jiffy lube puts in High Mileage Enging oil but does not seem to help the issue. Another suggestion was using 20/50 Oil instead of 10/30. Help!
have the same problem?
Sunday, May 6th, 2007 AT 5:14 PM