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They salt roads the hard up here in NW PA. My rotors are all stock. Fronts still have original pads! Almost 80k on the truck. I turned the rear rotors and replaced the rear pads at 56k. I consider that to be great.:) Also as my truck is six speed I do not have the Allison to help me out with braking.:gearjamin
 

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Diesels dont have copression braking. Compression braking is actually Vacuum braking. In a gasser the braking is caused by the engine trying to suck air past the closed throotle body. A diesel has no air throotle to cause a vacuum. I can down shift all I want it really does not do much. That is why big trucks have Jake brakes.
 
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