I have a new Scepter 6 gal. fuel tank that builds up pressure just sitting under the carport. Here in central Florida its usually around 90 degrees. Scepter says that the cap has a vent that will release pressure at 5 PSI but fuel is still being forced out the barb to hose fitting.

I know that the new tanks like this one will also swell in the sun, something I really don't like.

But ,,,,,,,,,,,,,,,, If were to make a hood out of styrofoam and cover the tank when its in the boat, do you think it would make a difference?

Anybody got any suggestions?