DJ,

Some of the previous respondents do not have the aux tank so that can't be blamed.

I think it is related to the change Prevost made to allow filling from both sides. I had an aux tank on my 87 coach and it filled only from the co-pilot side. I could run that nozzle full tilt and it would shut off with nary a drop splashed. Then, if fuel was especially cheap I would stand right there and try to cram in every last drop. Again, not a drop spilled.

On my current coach with aux tank and two side fill my first experience was like Mango's. I ended up throwing away some prefectly good shoes and pants.

I no longer fill from the driver side. I never stand within spitting distance of the fill spout, and I never try to top it off no matter how slow I squeeze the handle because for sure it will puke fuel. This fuel filling thing is apparently some Prevost engineer's way of taking a perfectly good filling system and screwing it up so the salesmen can call it an improvement.