Don't know what all the fuss is about
......25 gallons using a regular "vehicle" diesel nozzle doesn't take but a couple of minutes. Why risk splashback trying to use the "truck size" nozzles????
When we had our motorhome, we used truck stops and, yeah, it was way quicker loading up 100 gallons using the "trucker" nozzle
Before inserting the nozzle, just get a couple of paper towels located around the pump and put them under the filler cap. Plenty of room there.....also a drain hole.