Gas sitting in boat for 1 week.
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Gas sitting in boat for 1 week.

  1. #1
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    Default Gas sitting in boat for 1 week.

    Ok.. This may sound like a really dumb question.

    But I leave my boat in my garage in havasu.And when I'm not there it gets like 100+ degrees in there when I'm not running the swamp cooler. And I was wondering how bad that affects the octane rating of your gas. My friend was telling me that in one week or two weeks that the gas thats in there goes from 91 octane to about 87 in that one week cause of all the heat. Is that true or not. Just wondering. Cause I always leave my boat with about a half tank in each side. Were out in havi every weekend using the boat. But does that 5 week days really drop the octane rating.

    And has anyone ever had any experience with any of the gas stations out here in havasu selling bad gas. You know. Lesser octane than your buying or just water in the gas. Just curious. Cause I've heard some stories of guys blowing there motors from things like that. But then again there motors were POS from the start. So who really knows why they blew.
    Last edited by "AS COLD AS ICE"; 06-20-2008 at 10:53 PM.

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  3. #2
    Lavey Me Alone
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    I'm no scientist, but I know my gas sat from November to May in Needles and still worked fine.

    RTJas
    "The only real disability in life is a bad attitude."

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    Quote Originally Posted by Rivertoys View Post
    I'm no scientist, but I know my gas sat from November to May in Needles and still worked fine.

    RTJas

    Thats the same thing I said. I always left my boats full in the winter time and they always ran fine the next year. No problem what so ever. But my friends were saying its cause of the heat that builds up in the garage that makes it go away or loose the octane. So who knows.

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    Old Skool Member DILLIGAF's Avatar
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    Quote Originally Posted by "AS COLD AS ICE" View Post
    Thats the same thing I said. I always left my boats full in the winter time and they always ran fine the next year. No problem what so ever. But my friends were saying its cause of the heat that builds up in the garage that makes it go away or loose the octane. So who knows.
    Drain it into 5 gallon tanks and I will come over to pick them up. I will run it in my boat and personally let you know how it ran

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    Senior Member Magic34's Avatar
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    Quote Originally Posted by "AS COLD AS ICE" View Post
    Thats the same thing I said. I always left my boats full in the winter time and they always ran fine the next year. No problem what so ever. But my friends were saying its cause of the heat that builds up in the garage that makes it go away or loose the octane. So who knows.
    I think they want you for your gas.

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    Quote Originally Posted by DILLIGAF View Post
    Drain it into 5 gallon tanks and I will come over to pick them up. I will run it in my boat and personally let you know how it ran

    Sounds good. See you on monday morning before we head out of town...

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    Quote Originally Posted by Magic34 View Post
    I think they want you for your gas.
    Or there just hating cause thats what haters do..LOL Not to mention one of the guys telling me that, just blew his 1100hp blower motor. LOL

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    Senior Member DeltaSigBoater's Avatar
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    I leave my boat in covered, under the a carport out in the desert unused for months at a time, with gas in the tanks. The boat starts and runs fine , but I always try to remember to add a bottle of Octane booster to each side before launch or a bottle of gas treatment before we leave.

    Your octane rating will drop over time, but if your using the boat regularly you, meaning you fill up regularly, you won't notice. Now god-for-bid, you have to let the boat sit for a couple years with gas in the tanks, you're going to have some really good varnish.

  10. #9
    HELL OF A GUY TITTIES AND BEER's Avatar
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    Quote Originally Posted by Puppy View Post
    If this is true than I am running about 50 Octane right now.
    you need to change your name and NOW! I'M NOT TAKEN ADVICE FROM A PUPPY!NOT NOW,NOT NEVER!
    CLEAR YOUR MIND ,AND YOUR ASS WILL FOLLOW

  11. #10
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    One week, no effect on octane, gas expands. You gained. LOL

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    Quote Originally Posted by jojoshow View Post
    One week, no effect on octane, gas expands. You gained. LOL
    How funny... Thats exactly what I thought. LOL

  13. #12
    Senior Member 2Driver's Avatar
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    Ran out my October gas over Memorial day wekend. It was fine...well I didn't notice anything anyway.

  14. #13
    Punk in Drublic Tiggle - Bitties's Avatar
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    Angry Remember last years price?

    The 25 gallons of gas in my tank from last season was only $3.25 a gallon! Just doesn't seem right to use it now that it's pushing $5!

    Oh well, off to the pumps I go...
    Originally Posted by bocco
    "One more thing. Boobs are like boat motors. I never heard a woman say she wished she had gone smaller"

  15. #14
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    May lose a .10 or so not 3 octanes.Ran a few tests awhile back to see for myself the out what the outcome would be.Want to trip out fill a clear bottle with gas cap it and leave it in the sun for an hour or 2 it will turn almost black.

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