I have a titan 06 and my neighbor has an armada. He noticed water or coolant in the oil cap. After changing his:angst-big: oil. HIs armada has about 40k miles on it. Last time I changed My oil I found my oil cap with coolant or water. It seem like oil mixed with coolant. I have 19k miles on mine. Should I be worry?

If the engine was cold, or had been driven for only a short time, then it would be normal to see moisture on the cap.

ok.thanks but it wasnt moisture, it looked like mud. I thought of taking it to the dealer for that, but I was remembering know that my neighbor has been adding coolant to his armada. last time i checked my coolant level it seem to be find. next oil change I get, I will check My oil cap again. I just never seen this before. on all the car that I have own.