What causes yellow gunk on the oil cap?
What causes yellow gunk on the oil cap? The yellow gunk which appears on your oil cap is normally caused by short trip driving. As long as you have checked the dipstick and have done a quick check of the valve cover inside comes out when it is clean, you will be in a position to eliminate any problem with the engine. How big is the oil cap on a 2000 Dakota? I drive a 2000 Dakota with the 4.7 liter. I went to the dealership. They said the probrlem has been identified and a work order bulletin released. They...