 I have owned 3 Ford Ranger pick up trucks and this 4.0L truck was the worst vehicle I have ever owned. This 2000 Ranger with a 4.0 L and 4 wheel drive was awfully. Bad gas mileage and very poor reliability. I had to replace the head gasket at 100,000 miles and now the engine block is cracked.  I bought this truck used and I am not sure how the previous owner took care of vehicle. I always change the oil ever 3000 miles and tried to maintain the vehicle. Unless Ford  builds a better truck I will look at other brands before I ever consider another Ranger. 