Using the wrong type of fuel in your motorhome can cause a multitude of problems. To keep your motorhome running happy and healthy, be sure you know what fuel to use.
Your motorhome will use an ultra low sulfur diesel fuel (ULSD) that has a maximum of 15 parts per million sulfur. On top of that, there is maximum percentage of allowable bio-diesel:
All units built on the Mercedes Sprinter chassis (All Unity models as well as the Serenity): Maximum 5% Bio-diesel (B5)
All units built on the Ford Transit diesel chassis (Early Wonder models): Maximum 20% Bio-diesel (B20)