🛢 RV Oil Change Calculator
Estimate exactly how much oil your RV engine needs — gas, diesel, or generator
| Engine Model | Type | Capacity (qts) | Capacity (L) |
|---|---|---|---|
| Ford V10 6.8L | Gas | 6 qts | 5.7 L |
| Ford 6.2L V8 | Gas | 8 qts | 7.6 L |
| Chevy 6.0L V8 | Gas | 6 qts | 5.7 L |
| Cummins ISL 8.9L | Diesel | 15 qts | 14.2 L |
| Cummins ISX 15L | Diesel | 30 qts | 28.4 L |
| CAT C7 7.2L | Diesel | 18 qts | 17.0 L |
| Ford 6.7L Powerstroke | Diesel | 10 qts | 9.5 L |
| GM 6.6L Duramax | Diesel | 10 qts | 9.5 L |
| Ram 6.7L Cummins | Diesel | 12 qts | 11.4 L |
| Mercedes Sprinter 3.0L | Diesel | 7 qts | 6.6 L |
| Onan 5500W Generator | Generator | 1.5 qts | 1.4 L |
| Onan 7000W Generator | Generator | 1.7 qts | 1.6 L |
| Engine Type | Oil Type | Miles | Hours / Annual |
|---|---|---|---|
| Gas RV Engine | Conventional | 3,000–5,000 mi | Every season |
| Gas RV Engine | Full Synthetic | 5,000–7,500 mi | Annually |
| Diesel Pusher (Small) | Synthetic Diesel | 7,500–10,000 mi | 400–500 hrs |
| Diesel Pusher (Large) | Synthetic Diesel | 10,000–15,000 mi | 400–500 hrs |
| Sprinter Van Diesel | Euro Spec Synthetic | 10,000 mi | Annually |
| Onan Generator | Generator Oil (30W) | 150–200 hrs | Annually min. |
| Tow Vehicle Gas | Conventional / Blend | 3,000–5,000 mi | Every season |
| Tow Vehicle Diesel | Full Synthetic | 7,500–15,000 mi | Annually |
| US Quarts | US Gallons | Liters | Bottles Needed (1-qt) |
|---|---|---|---|
| 1 qt | 0.25 gal | 0.95 L | 1 |
| 4 qts | 1 gal | 3.79 L | 4 |
| 6 qts | 1.5 gal | 5.68 L | 6 |
| 8 qts | 2 gal | 7.57 L | 8 |
| 10 qts | 2.5 gal | 9.46 L | 10 |
| 12 qts | 3 gal | 11.36 L | 12 |
| 15 qts | 3.75 gal | 14.20 L | 15 |
| 30 qts | 7.5 gal | 28.39 L | 30 |
| RV Type | Changes/Year | Total Oil/Year (qts) | Total Oil/Year (L) |
|---|---|---|---|
| Class A Gas (3k mi int.) | 2 | 12–16 qts | 11.4–15.1 L |
| Class A Gas (5k mi int.) | 1 | 6–8 qts | 5.7–7.6 L |
| Class A Diesel Pusher | 1 | 15–30 qts | 14.2–28.4 L |
| Class B / Sprinter | 1 | 7–10 qts | 6.6–9.5 L |
| Class C Gas | 1–2 | 8–16 qts | 7.6–15.1 L |
| Onan Generator (200 hr/yr) | 1–2 | 1.5–3.4 qts | 1.4–3.2 L |
Changing the Oil Change in an RV belongs to those tasks that seems easy, but can turn into trouble. The most many makers of RV suggest an Oil Change all 3000 to 5000 miles or every year for traditional oil. If you use fully synthetic oil, one can extend the gap to 10 000, 15 000 miles without any worry.
Some companies even advise to do that all three or six months, or yearly, regardless of the travels of the vehicle. Follow the schedule of the maker matters for the health of the engine and for keeping the warranty valid.
When, Where and How to Change RV Oil
For an RV, the oil must change in the same rhythm as in average cars. Even so, finding a good place for the process often becomes real trouble. Many such vehicles do not fit in usual lifts or in quick-change stations with drive-through.
Stores for trucks and RV sometimes insist to park the car during weeks only for an Oil Change and simple care. That truly seems too much.
When dealing with regular rigs, especially big diesel engines, a garage for trucks usually is the best solution. Commercial Ford truck shops have usually more roomy pits and lifts, designed for heavy machines. Service centers of Freightliner work on coach frames.
Class B or C RV can serve the most many shops with the right gear. One should avoid quick-change stores for big models, although some users found sites like Valvoline, that takes RV and does synthetic Oil Change jobs for about 100 dollars. Speedco offers fast in-and-out service, even so best to call before to check weather they have the right filters and oil for gas RV.
Doing the Oil Change yourself clearly costs less. One way is buy oil and filter, which is usually below 100 dollars for materials. Use hand drains in five-gallon bins from bulk stores, especially on diesel engines with two drain plugs, that allows to spill half of the oil at once.
The whole work lasts around 20 minutes, when everything is ready. After draining, start the engine and check levels below. Recheck the oil level after lowering the RV.
Later close the oil pan, wash the tools and return the used oil. Local recyclingcenters and auto salvage yards accept used oil.
The prices at shops vary a lot. Some pay under 80 dollars in a service center, while others receive quotes of 380 or even 450 dollars. One Freightliner dealer asked 800 dollars for oil, oil filter and fuel filter on big diesel.
Owners of RV sometimes pay more only because of that, that it is an RV. Best to do an Oil Change before winter storage, because leaving old, dirty oil in the engine during a whole season is not a good idea.
Mobile services for Oil Change is another option, that one often finds in guides of campgrounds. It works for those, that can not or do not want to do that themselves.
