Three issues over 15 years.
Injectors at 92,000 miles, dash gauges all zeroed/reset at 110,000 miles and Transmission cable at 112,000 miles. Annual service using 'Lucas additives' with engine and transmission fluids. 70 - 80% original brake pads equates to 95% highway mileage. Handles 30' 10,000 lb 1990 Aluma Lite fifth wheel and 4000 lb 1995 Lance Camper with 5,000 lb Jeep Rencon with no problems.