Join Date: Jun 2004
Location: West Michigan
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Having used propane nearly all my life I have to say that propane is not oderless, it has a very noticeable smell to it, I think it's added the same way as natural gas' characteristic oder is.
Gasoline fumes are heavier than air, but not as heavy as propane fumes, so they -may- not drain out of the locker as rapidly as propane fumes would, and also, as stated earlier, the propane is sealed, gasoline cans arent, so there will be more fumes produced.
So my view is that it realy depends on where the locker is, where it drains, and how large the drain is. That being said, I used an outboard tank on the floor of an old station wagon (bad tank in car) for a couple years and had no problems with it, never smelled fumes once, so if the tank is tight and leakfree you should be fine.