Diesel
Maintenance
Prevent Downtime.

Why Diesel Maintenance Matters

Diesel engines are built for durability, but they require regular maintenance to deliver the reliability they're known for. Clean fluids, quality filters, and routine inspections help reduce wear, improve fuel efficiency, and protect expensive components such as injectors, turbochargers, and fuel systems.

Whether you use your truck for work, towing, farming, or everyday driving, staying on schedule with routine maintenance helps reduce unexpected breakdowns and extend the life of your engine.

Protect Your Investment

At 501 Automotive, we provide comprehensive diesel maintenance services designed around your manufacturer's recommendations and your truck's workload. Our technicians inspect your vehicle thoroughly while performing scheduled maintenance, allowing us to identify small concerns before they become expensive repairs.

Routine diesel maintenance is one of the most cost-effective ways to maximize reliability and keep your truck performing at its best for years to come.

Our Diesel Maintenance Services May Include:

  • Full Synthetic Diesel Oil Changes
  • Fuel Filter Replacement
  • Air Filter Replacement
  • Cooling System Inspection
  • Fluid Level Inspection
  • Belt & Hose Inspection
  • Battery & Charging System Test
  • Multi-Point Vehicle Inspection
  • Scheduled Maintenance Services
  • Maintenance Schedule Recommendations

How often should I service my diesel truck?

Service intervals vary by manufacturer and driving conditions. We recommend following the factory maintenance schedule.

Why are fuel filters important?

Diesel fuel systems operate under extremely high pressure. Clean fuel filters help protect expensive injectors and fuel pumps.

Should I change my diesel oil more often when towing?

Heavy towing, commercial use, and severe driving conditions may require shorter maintenance intervals.

Do you use full synthetic oil?

Yes. We perform full synthetic diesel oil changes using premium oils that meet manufacturer specifications.

Can routine maintenance prevent major repairs?

Absolutely. Preventive maintenance helps catch worn components early and reduces the likelihood of costly breakdowns.

SDo you inspect the truck during maintenance?

Yes. Every maintenance service includes a comprehensive inspection of major systems.

Do you service fleet trucks?

Yes. We provide maintenance services for individual diesel trucks as well as commercial fleets.

Can you keep track of my maintenance schedule?

Yes. We'll help you stay on schedule and recommend upcoming services based on your mileage and manufacturer requirements.

3665 Estes Pkwy.
Longview, TX 75603

(903) 758-0501

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200 Supply St.
Longview, TX 75604

(903) 740-0501

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