RE: putting diesel in rv
Perzina,
I suspect you only have one fillup point on your motorhome. IF you have a fill up point on both sides open the cap on the far side and you will get your fuel in okay (providing you have an idea on how much you will take if not could make a huge mess). What is happenning is when you fuel at the truck islands it pumps much faster and your fuel is foaming. Maybe try not inserting nozzle in all the way may help in venting.
Second option would be to look under your motorhome near fueling point and see if the line makes a quick "U" if so see if there is enopugh play in the line to straighten it out some to help with venting.
Another option and this one really will frost you, at the truck stops use the auto pump island (providing it has diesel)which will pump much slower, thus reducing foaming. Course this takes alt longer.
V/R
Jeff