Used Class 3–7 work trucks look cheap up front, but tired DPF, SCR, EGR, DEF, and sensors turn into the number one hidden cost. This guide shows why emissions fail more on used units, what repairs cost, how duty cycles accelerate damage, and where TruckProtect coverage helps.

See what really fails first after 500k miles on a semi, from sensors & DPF to EGR, turbo, injectors, cooling, and transmission, what those repairs cost, how the failure sequence usually unfolds, and how smart maintenance plus TruckProtect style coverage protect high mile trucks.

See how off road terrain quietly destroys suspensions, frames, axles, cooling, electrical, and aftertreatment on heavy duty vocational trucks, what those failures cost, and how smarter severe duty maintenance plus TruckProtect coverage help construction, logging, and oilfield fle