[dsraven]

a marine supply shop could also supply a fitting for the end of the vent hose. boats use them but they are attached to the hull near the filler, not just a fitting in the end of the hose that hangs like an axle vent does. on one boat that I had the vent would start to spit a little and that was the indicator to slow down the fill speed because the tank was nearly full. that way you don't wear fuel when it burps back out the filler on you.