Preventive maintenance for semi trucks: the basics
Updated October 2026
Preventive maintenance (PM) costs less than breakdowns, tows and missed loads. Build a schedule and stick to it.
The core services
Engine oil and filters, fuel filters, air filters, chassis lubrication, coolant checks, brake inspection and adjustment, tire checks, and transmission and differential fluids.
Set your intervals
Intervals depend on your engine, how you run and oil analysis results. Start with your engine maker's recommendations and adjust with your mechanic.
Keep records
Write down every service with date, mileage and cost. Records help resale value and are required for some inspections. Use our maintenance schedule planner.
