Generator Oil Service

Professional oil change with performance testing. Cummins Onan certified service.

Gas $200 Diesel $300 Report Type notes



What's Included

  • OEM Oil & Filter Service: Correct weight oil and genuine Cummins Onan filter per your model's specifications.
  • Load Test Verification: Run generator under actual electrical load like a/c our mircor wave and make sure it powers.
  • Frequency (Hertz) Check: Verify stable 60Hz output. Off-spec frequency damages electronics.
  • Full System Test: Start generator, run coach systems, verify operation on generator power.


Why This Matters

  • Generators Fail From Neglect: RV generators sit unused for months then get asked to run for hours in extreme heat.
  • Load Testing is Critical: A generator that starts doesn't mean it works under real-world load.
  • Protect Your Electronics: Unstable voltage or frequency destroys electronics.
  • Avoid Emergency Repairs: Generator replacement costs $3,000–$8,000+.

Maintenance Schedule: Cummins Onan recommends oil service every 150 hours or annually, whichever comes first.


Premium Generator Service

Complete maintenance package—all filters, fluids, and comprehensive performance testing.

Gas $300 Diesel $500  Report Type  Full Workup


What's Included

  • Complete Filter Replacement: Oil filter, air filter, AND fuel filter—all genuine Cummins Onan OEM parts.
  • Full Fluid Service: Correct-spec oil change with proper weight for your model.
  • Comprehensive Load Testing: Full electrical load test measuring voltage, amperage, and frequency under actual operating conditions.
  • Voltage Stability Analysis: Measure voltage under varying loads to ensure stable output.
  • Exhaust & Cooling System Check: Inspect exhaust for leaks and restrictions. Verify cooling system operation.
  • Complete Performance Report: Detailed documentation of all test results and measurements.


Why This Matters

  • Prevent Common Failures: Hard starting, surging, and voltage instability are usually caused by dirty air/fuel filters.
  • Full-Timer Insurance: If you depend on your generator daily, this ensures reliable power.
  • Maximum Generator Life: Cummins Onan generators can last 10,000+ hours with proper maintenance. Neglected generators fail at 2,000–3,000 hours.

Best For: Full-timers, extended boondocking trips, or generators with 50+ hours since last service. Includes all filters (oil, air, fuel) + comprehensive performance testing.