I was with my dad when he bought this truck new in 1992 and 5 years and 105,000 miles later I bought it from him. He put 105K on pulling a big fifth wheel all over the country and went through 3 transmissions before finally getting one that stuck. The cummins TD is a gem and will never fail. Ever. And the truck will pull anything and gets fantastic mileage with and without a load. But I have had a ton of problems underneath with U- joints, wheel bearings and seals, and the rear differential. I poured thousands into this truck repeatedly and finally decided I would stop and just "drive it til it blows". Problem is that it won't.