My younger brother going to Ole Miss , im gave him 1998 Mustang GT 4.6 110k miles, everything stock and I already change all fluid and done all the tune up, no CEL, his driving style is , he stay half miles from his college, he crank up and drive, I dont think the car even fully warm up when he get there. he come home every few month. I was thinking doing something like 1 a years oil change.