Kenworth C 500 1980

Thoroughly inspect the frame for rust or cracks, especially in areas exposed to road salt or harsh environments.

Verify the engine and transmission maintenance history; a documented service record is crucial for these heavy-duty components.

Test drive under load if possible to assess engine power, transmission shifting, and braking performance.

Check for leaks (oil, coolant, hydraulic fluid, air brakes) – persistent leaks can indicate significant underlying issues.

Consider the intended use: ensure the truck's configuration (axles, wheelbase, PTO) matches your specific vocational needs.

Factor in the cost of potential repairs and upgrades, especially for older trucks lacking modern safety features.