Flarpswitch wrote:
The 2009 Navion was built on a 2008 Dodge Sprinter. That had the restrictor that would allow a regular diesel nozzle to be inserted, but the high volume nozzle had to be lined up and the tip held in place. Any misalignment assured diesel spraying on you. Our 2018 Navion is on a 2016 MB Sprinter chassis. The filler neck looks like there could be a restrictor plate installed. The two year difference is due to Winnebago using a MB Sprinter chassis built in 09/2016 and adding a 2017 Navion coachwork completed the second quarter of 2017. Nothing about it is 2018 if you go by the specs.
Sorry, I misread what you wrote. My 2006 chassis T1N based '07 View has a wide open filler neck and a large, high flow truck nozzle easily goes in, but I hate them as they cause much foaming of the fuel. I generally seek out diesel at the auto pumps and stay away from the truck pumps. Sometimes in rural areas you can get stuck with the large nozzle however.
Charles