Old-RV'er
RVF Expert
- Joined
- Feb 23, 2020
- Messages
- 500
- Location
- Blairsville, GA
- RV Year
- 2019
- RV Make
- Newmar
- RV Model
- Ventana 3407
- RV Length
- 34'10"
- TOW/TOAD
- 2013 Jeep Wrangler Sahara Unlimited
- Fulltimer
- No
FWIW-It takes about 15-20,000 miles for the engine to fully run in (break-in) as that happens it will improve. However, you are hauling around a lot of weight, moving and keeping that weight in motion takes fuel. I have 16K on Ventana 3407, my dead weight is 30K, and I get between 7-10 MPG depending on terrain. I do not have near the engine you have. Every single one is different.