: Check for "blow-by" pressure, oil leaks around the block, and even exhaust color. Blue smoke often indicates burning oil.
: If a seller cannot produce consistent service logs (especially oil changes and DPF cleanings), walk away. buy used commercial truck
The following models are consistently cited by industry experts from International Used Truck Center and Rush Truck Centers for their reliability and resale value: : Check for "blow-by" pressure, oil leaks around