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Thread: Fuel Tanks - portable

  1. #1
    Senior Member Tony B's Avatar
    Join Date
    Jul 2012
    Little Tennessee River (Tellico Lak) near Knoxville

    Fuel Tanks - portable

    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?
    Houseboater at Heart
    1986 Mainship 36 Dual Cabin Pointed Ended House Boat

  2. #2
    Senior Member
    Join Date
    Jul 2012
    Pacific Northwest
    No it is not. store them out of the sun in a well ventilated place. loosen the cap occasionally.

  3. #3
    Senior Member BananaTom's Avatar
    Join Date
    Dec 2006
    Pensacola, Florida
    I keep 75 gallons in my shed, in those red plastic cans. For emergency generator usage at the house.

    They do expand and contract allot.

    When they expand, I let the air / pressure out, and then recap them.

    Then they no longer "bloat", but instead get "skinny"

  4. #4
    Senior Member GoVols's Avatar
    Join Date
    Aug 2011
    Nashville, TN
    I have 4 of them as well. When they're empty, I leave the cap on loosely to prevent them from getting skinny. When skinny, they hold less fuel whenever I try to refill them. Mine don't hold gas long b/c I usually dump it in the boat once I get to the dock.
    Formerly owned a 16X69' Sailabration

    Bet On Another Thousand

  5. #5
    Senior Member Stmbtwle's Avatar
    Join Date
    Apr 2003
    Ruskin, Florida
    If they expand and contract enough, eventually they will develop cracks in the plastic and the most volatile parts of the gas will leak out. BTDT. What's left will make for a hard-starting engine. Keep them in the shade as much as possible, but DON'T put them in the cabin or engine room.

    I'd go with Vols, whenever you refuel, put any gas from the cans into your tank and then refill the cans, so it stays fresh. I think you're better off NOT venting them.
    She's a tired old barge but she's paid for!

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