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The Ultimate Guide to Preventative Maintenance for Commercial Trucks

Maintaining a commercial truck fleet is no easy task, especially in a busy city like Detroit, MI. With long hauls, harsh weather conditions, and constant wear and tear, keeping trucks in optimal condition is crucial for safety, efficiency, and cost savings. Preventative maintenance is the best way to avoid unexpected breakdowns, costly repairs, and prolonged downtime.

In this guide, we’ll cover everything you need to know about preventative maintenance for commercial trucks, including essential checks, maintenance schedules, and expert tips to keep your fleet running smoothly.

Why Preventative Maintenance Matters for Commercial Trucks

Commercial trucks are the backbone of the logistics industry, and neglecting maintenance can lead to:

  • Increased breakdowns on busy Detroit highways

  • Higher repair costs due to ignored minor issues

  • Safety risks for drivers and other motorists

  • Downtime losses from delayed shipments

By implementing a structured preventative maintenance program, fleet managers can extend vehicle lifespan, improve fuel efficiency, and ensure compliance with DOT regulations.

Key Components of Preventative Maintenance for Trucks

1. Regular Oil & Fluid Checks

Engine oil, coolant, transmission fluid, and brake fluid must be checked and replaced at recommended intervals. Dirty or low fluids can cause severe engine damage.

2. Tire Inspections & Rotations

  • Check tire pressure weekly to avoid blowouts.

  • Rotate tires every 15,000–20,000 miles for even wear.

  • Inspect tread depth and look for signs of damage.

3. Brake System Maintenance

Faulty brakes are a leading cause of truck accidents. Regularly inspect:

  • Brake pads and rotors

  • Air brake systems (for heavy-duty trucks)

  • Brake fluid levels

4. Battery & Electrical System Checks

  • Clean battery terminals to prevent corrosion.

  • Test battery voltage regularly.

  • Inspect wiring for frays or loose connections.

5. Suspension & Steering Components

Worn-out shocks, struts, or ball joints can lead to unstable handling. Inspect:

  • Shock absorbers

  • Bushings and bearings

  • Steering linkage

6. Belt & Hose Inspections

Cracked belts or leaking hoses can cause engine overheating. Replace them before they fail.

7. Air Filter Replacement

A clogged air filter reduces fuel efficiency and engine performance. Replace every 25,000–50,000 miles.

8. Exhaust & Emission System Checks

Ensure the DPF (Diesel Particulate Filter) and SCR (Selective Catalytic Reduction) systems are functioning correctly to avoid emissions violations.

Creating a Preventative Maintenance Schedule

A well-structured maintenance schedule depends on:

  • Mileage intervals (e.g., every 10,000, 25,000, or 50,000 miles)

  • Usage intensity (long-haul vs. local deliveries)

  • Manufacturer recommendations

Sample Maintenance Schedule:

ServiceFrequency
Oil & Filter ChangeEvery 15,000–25,000 miles
Tire RotationEvery 20,000 miles
Brake InspectionEvery 30,000 miles
Full System DiagnosticEvery 6 months

Benefits of Professional Preventative Maintenance in Detroit

While some fleet managers handle basic checks in-house, partnering with a trusted commercial truck maintenance provider in Detroit, MI, like Tri-County Roadside Inc, ensures:

  • Expert diagnostics with advanced tools

  • Compliance with DOT regulations

  • 24/7 emergency support for unexpected issues

  • Customized maintenance plans for your fleet

Final Thoughts

Preventative maintenance isn’t just a cost it’s an investment in your fleet’s longevity and efficiency. By following a structured maintenance plan, truck owners in Detroit can minimize breakdowns, reduce repair expenses, and keep their vehicles on the road longer.

For reliable commercial truck maintenance in Detroit, MI, trust the experts at Tri-County Roadside Inc to keep your fleet running at peak performance. Whether you need routine servicing or emergency repairs, our team is here to help!

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