Quote:

Put a shut off valve in the vent tube and shut it off when you are not at the track. It will keep the system sealed and not as much gas will evaporate.

Raul



And if the tank heats up it will pressurize it and
turn it into a ball... he can put a charcoal canister
on the vent line.. but every once in a while he will
have to blow it out with air to purge the vapors