I bought 4 new fuel tanks recently. The typical Wally World 5 gal. plastic gas jugs so I can carry an emergency supply of about 16 gals.
I use gasoline. The new tanks do not have vents. Great idea, no fumes escape - initially. Looks like all of the fumes will escape at the same time when the tanks explode from the pressure inside. These things really bloat.
QUESTION: Is it safe to assume that there is some form of pressure relief if the internal pressure should get real high?