"03" 150 oil loss
My 2003, F-150 has 89,000 on it, every 3000 I do an oil change. The problem I have when it got to 50,000 miles on it I started noticing that when it came time for the oil change the dipstick would show it was 1 1/2 quarts low on oil. I have no oil leaks nor does it smoke. 9000 miles ago I noticed a creamy white substance on the inside of the oil filler cap, what is going on with this?