HEN AMSOIL DEALER JERRY PRUETT of Woodhull, Ill. purchased his new 1999 Kenworth over-the-road truck in December 1998, he thought it might run forever if he installed AMSOIL synthetic lubricants. Now with more than 1.6 million miles on the drivetrain and over 1.1 million on the factory-rebuilt engine, "forever" still remains in sight.
The mileage is even more impressive considering how little work the truck has required. The Detroit Diesel Reliabilt® engine still has virtually all of its original components, including the turbo and fuel injectors. The truck accumulates 2,300 - 3,000 miles a week hauling loads averaging 27,000-35,000 pounds, with some up to 80,000.
The reliability of the drivetrain is also notable. Though the clutch has been replaced a couple times, the transmission hasn't been touched. "I've done nothing to the transmission. All the gears in it are at 1.6 million miles," said Pruett. The differential gears are also original to the truck.