My 2001 Ford Ranger with the 4.0 have 194,000 miles. 160,000 plus were mail route miles.....the worst kind. It still does not use any oil.
I had a 1992 Ranger STX with the 4.0. It was a 2WD, 5 spd, short bed, regular cab. I bought it new and drove it like a sports car. Somewhere around 75k miles when intruded it in and it still didn't use any oil, even with all those high RPM stunts.
