A disciplined preventive-maintenance program is what keeps a diesel fleet running and profitable, turning surprise breakdowns into scheduled, predictable service.
Build the program around intervals
Set service intervals for oil, fuel filters, coolant, and inspections based on each truck's duty cycle, not just mileage. Severe-duty use (towing, idling, short trips) shortens every interval.
- Oil and oil filter on a duty-based interval
- Fuel filters and water-separator drains on schedule
- Coolant service to specification
- Scheduled inspections of belts, hoses, and the cooling system
Track by truck
Keep records per unit so you can see patterns, forecast wear parts, and catch a truck that is trending toward a failure. Data turns maintenance from reactive to predictive.
Stock the common wear parts
Downtime waiting on parts is expensive. Keeping the fast-moving items on the shelf, fuel filters, belts, sensors, and common failure parts for your platforms, keeps trucks moving.
Frequently asked questions
How do I set fleet service intervals?
Base them on each truck's duty cycle, not just mileage. Severe-duty use shortens oil, filter, and coolant intervals.
Why track maintenance per truck?
Per-unit records reveal patterns, forecast wear parts, and flag a truck trending toward failure before it strands a driver.
What parts should a fleet stock?
Fast-moving wear items: fuel filters, belts, sensors, and the common failure parts for your specific platforms.
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