[bushpilot]

Engine was off during filling, i cant think of a single time when i have filled the tanks w/ the engine running.

This last time (this past sunday) i did have to move the coach to fill the other tank.
Doesnt take me long to turn the coach around at my local filling stations / grocery store, so i don't think the pump could have turned over 20 or 30 gallons into the other side/tank.

I've seen similar results when I've NOT had to move the coach (using master/slave pumps at the same time).

is there a gravity equalization going on here ? w/ 60gal tanks even on a master/slave (think truck stop) pump set up i don't like to let one run while I'm at the other tank filling...ONCE i had a nozzle jump out and spill a few bucks on the ground (now i use bungie cords to hold the nozzle down but still don't trust it too much).

When I've filled one tank at a time (even at master/slaves) I've never seen one side drop (after I've filled it to the brim...and i do fill to the brim every time).