Re: Portable Gas Tank (different kinds)
The manual vent models are crap, in my opinion. Close it when you go home and if the temp gets low at night when the tank is low, the pressure change causes the tank to implode. Then you have to vent it again and wait for a hot day to close it so it pops back out. Mine is (was) a Tempo tank, so its not a cheap one. I had to leave the vent open all the time. Plus, if you are not real astute about your equipment, if you leave it closed and forget, you'll run out of gas about a minute after you leave the dock.
I threw mine away and went back to a self venting metal tank.