RV oil changes follow two clocks: miles and time. Because many RVs sit for months, time often matters as much as mileage. Here’s how to think about it for the engine and the generator.
The chassis engine
Follow the oil change interval your chassis manufacturer lists for your engine — Ford, Chevrolet, Freightliner, Cummins and others publish their own. Many RV owners hit the time limit before the mileage, so at least once a year is a sensible baseline even with low miles.
Gas vs. diesel
Diesel engines hold more oil and often use different oil specifications and intervals. Use the oil type and grade your engine maker specifies.
The generator has its own schedule
Generators are serviced by hours of use, with an annual change for light use. Check your generator’s manual.
Severe service
Towing, mountain driving, extreme heat and dusty conditions count as severe service and usually shorten the interval.
Do it with a chassis service
An oil change is a good time to lube the chassis and check belts, hoses, fluids and brakes. See RV repair and maintenance.
Frequently asked questions
Should I change the oil even if I barely drove?
Yes — oil ages over time. Once a year is a good minimum.
Do you change oil on diesel pushers?
Yes, gas and diesel.
Can you service the generator at the same time?
Yes.
Need help with this? See our RV repair and maintenance service, call (949) 830-1996, or request an appointment. Appointments are available Monday through Friday, and Saturday appointments begin January 1, 2027.
Have a question about your RV?
Our service advisors answer the phone — and we put the estimate in writing before any work.
