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Thread: Fuel storage lifespan.

  1. #11
    Join Date
    Feb 2009
    Location
    Brisbane
    Posts
    285
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    8 weeks is a general rule for how long fuel lasts, after that it clogs up jets and is generally awkward to use.

    9 out of 10 failures of small engines are due to old fuel and ethanol disintegrating rubbers and seals in the carb.

  2. #12
    Join Date
    Jan 1970
    Location
    Irymple, Victoria, Australia
    Posts
    2,905
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    Maybe two stroke oil mixed with fuel prolongs it's life.
    We have a little 5HP Tohatsu outboard motor that had not been started for at least 12 years, but it is always stored upright on a bracket on the shed wall. Yesterday I got it down and set it up on a stand, opened the air vent, turned on the fuel, full choke and three pulls and it was running like a clock. It is a very early model that doesn't have a rubber impeller to pump water through so no issues there either. Took it down the river and it ran perfectly.
    I expected that the carby would be clogged with fuel that had turned to sludge but not in this case.

    Cheers, Mick.
    1974 S3 88 Holden 186.
    1971 S2A 88
    1971 S2A 109 6 cyl. tray back.
    1964 S2A 88 "Starfire Four" engine!
    1972 S3 88 x 2
    1959 S2 88 ARN 111-014
    1959 S2 88 ARN 111-556
    1988 Perentie 110 FFR ARN 48-728 steering now KLR PAS!
    REMLR 88
    1969 BSA Bantam B175

  3. #13
    Tombie Guest
    Old storage engines dont usually clog from old fuel, they clock when fuel hits old dried out gaskets.


    My boat runs like a dog on fuel older than 3 months unless we add Stabil.

    I've done this twice now - Pump tanks into drums...
    Take drums to fire test area.

    Tip fuel out... Stand back... Ignite

    200l of old Premium goes up pretty good!!!!!

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