My Dad has a 85 F-250 with a 6. 9 and a C6 auto. and it has 200,000 on it . The transmission went out at about 180,000 but the motor has never been into . It does like starters and alternators but I might have fix that because he was putting to small of batteries in it and it has had a few water pumps put on it and a set of glow plugs and a injector pump and a set of injectors . Now it aint as fast as my Dodge but it still runs good .