Yesterday I managed to dribble gasoline all over the back of Landlady’s Prius, as 2 of 3 retrofitted Jerry can vents decided to leak precious juice.
I assumed the same thing happened as before, that the sealant held but the cans’ paint gave way. In fact, not so much.
This one clearly shows that the sealant just got hard and cracky, and broke free of the vent without ever pulling the paint off the can. I’m confused by this, since the cans are not left out in the sun. I put a cover on the trashcan corral specifically to get them out of the sun. So now I’m starting to think I need to find a better sealant, though in every other way this stuff has always worked fine for me.
Anyway, they’re all fixed again. So we’ll give it another try. So far I’d have to say that if you want metal rather than plastic fuel cans, you’ll have to spend the money for milspec. These are full of trouble.
Next time – and there’s sure to be a next time – I’m going to take somebody’s advice and replace the current vent with a tire valve just to see if that’ll seal better.