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Thread: AV - Gas?

  1. #1
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    AV - Gas?

    Anyone going to the airport to fuel their boats to avoid the Ethanol?

    The added octane is nice I am just trying to stay away from the Alcohol.

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    Not so much anymore but I used to frequently.

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    Quote Originally Posted by Capt.Insane-o View Post
    Not so much anymore but I used to frequently.
    Any problems going in? Security ETC.

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    Nope my dad has been doing it since 1976 for his sno twister i have been doing it for 20 years no problem

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    Not around here. There are two smaller airports I just roll up to the pumps slide the card and go. Years ago they asked a few questions. They frown upon filling barrels but a few cans and the boat is fine. If your motor doesn't need the octane it's a wasted expense though.

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    Nothing beats the smell

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    Quote Originally Posted by Capt.Insane-o View Post
    Not around here. There are two smaller airports I just roll up to the pumps slide the card and go. Years ago they asked a few questions. They frown upon filling barrels but a few cans and the boat is fine. If your motor doesn't need the octane it's a wasted expense though.
    What is the threashold for compression to require the octane? 150?

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    140-145 is safer for pump gas. The motors I run on av gas were 180-185

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    Just saying, don't have to follow. On crossflows I have that are fresh rebuilds with all things right and blow-by that's minimal and cranking psi done correctly at 170psi. I run min 91 to 94, never an issue with even lots of ign. I run forged pistons and lots of good oil. Same motors still with 170 psi and 200hrs, no issues pistons look beautiful. Doesn't mean it works for you .

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    Anything added or removed from AV gas for Altitude to be concerned with?

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    The fuel weight is a bit different, some mix with hightest gas for a good blend. If you're not letting the 10% alc hightest sit too long etc it should be fine in a modern engine, treatment works as well.

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    Quote Originally Posted by 2.5-21 View Post
    Anyone going to the airport to fuel their boats to avoid the Ethanol?

    The added octane is nice I am just trying to stay away from the Alcohol.
    I see you're in the great South Bay. If you are willing to take a drive up north a little ways, starting in Ulster county NY, Stewart's shops sell 91 Non ethanol at the pump.

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    Is straight 91 or better difficult to find in that area?

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    If'n yer fuel lines and carb kits are ethanol 'compliant'. And ya empty the tank(s) often. You shouldn't have a problem. I run 93 pump gas a la corn oil. Done so for years.

    Fwiw 104 is available at the small airport here. Drive up to the pump, swipe yer card et voila. You're good to go.
    '71 Glastron V153 - Composite rebuild - Unceremoniously wrecked
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    WALK TALL AND CARRY A BIG BILGE PUMP

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    Use the 100LL once in awhile, smoother.Can turn up ign a couple more *

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