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  #1  
Old 01-23-2007, 08:24 AM
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lassy lassy is offline
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too late for fuel stabil?

so i live down here in georgia, and i haven't had to "winterize" the boat necessarily for the entire winter, just drain the block every now and then when it freezes. i've been taking the boat out every 2-3 weeks, but i haven't had to refill it in some time. i've read that gas breaks down after two weeks, but the boat hasn't been running bad when i've taken it out. should i go ahead and try to run off the remaining 1/4 of a tank and then thrown some fuel stabil in about half a tank and let it run through some of it?

it's been one of those things that i've just forgotten to do........
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Old 01-23-2007, 08:36 AM
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chudson chudson is offline
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I'm not an expert on fuel destabilizing but I think you run it enuff not to worry about it. But just to make yourself feel better, don't run off the 1/4 tank just put in the stabile and bring it up to 3/4 full so when weather warms up fuel won't expand and run over!!!
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Old 01-23-2007, 09:22 AM
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Jesus_Freak Jesus_Freak is offline
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Quote:
Originally Posted by chudson
I'm not an expert on fuel destabilizing but I think you run it enuff not to worry about it. But just to make yourself feel better, don't run off the 1/4 tank just put in the stabile and bring it up to 3/4 full so when weather warms up fuel won't expand and run over!!!
I am not certain about this, but I propose fuel density doesnt change that much from 30°F to 100°F. For example the density of liquids like octane, heptane, ethanol, and water only decrease 4 - 5% over this range. You bring up a great point, but 1/4 tank might be too much of a buffer. But then again...how accurate are our fuel gauges?

EDIT: I found once that temperature makes a huge difference if the tank is so full (or the boat is cocked) that the vent line contains fuel. This effectively seals off the fuel tank. The vapors expand strongly with increasing temperature, raising the pressure in the tank, and spraying out fuel from the vent. Big mess...
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Last edited by Jesus_Freak; 01-23-2007 at 01:15 PM.
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  #4  
Old 01-23-2007, 10:48 AM
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east tx skier east tx skier is offline
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Sounds like you've been running it enough. If it were me, I'd just fill the rest with 93 octane to bring up the overall octane for the layup and add stabil to the full tank. I'm no expert on this either though.
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Old 01-23-2007, 11:01 AM
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You're probably fine. I've heard that gas does start to lose octane rating and break down in ~1 month, but I've had gas sit longer and be OK. I'd pour in either Sta-bil or Sea Foam, then fill up the tank with fresh gas. I run one or the other in my boat almost all the time, unless I know I'll burn through a full tank in less than a month, which sadly is not too common fo me. I usually use Sea Foam more regularly, and Sta-bil at the last tankful in the fall.
Good luck.
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  #6  
Old 01-23-2007, 11:22 AM
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Your fine just top off with some good stuff.
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  #7  
Old 01-23-2007, 11:49 AM
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Workin' 4 Toys Workin' 4 Toys is offline
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Seafoam it.....or use stabil if that's what you have laying around....

It's not too late....
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Old 01-23-2007, 11:53 AM
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I am not promoting mistreatment of your boat but I have a lawnmower that has not been started in over a year(nor have I given it more than a second glance as far as maintenance) I guarantee it starts on the first pull next time I want to use it..... FWIW I have never knowingly had a stale fuel problem.... your results may vary
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Old 01-23-2007, 11:57 AM
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Workin' 4 Toys Workin' 4 Toys is offline
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Originally Posted by Ric
I am not promoting mistreatment of your boat but I have a lawnmower that has not been started in over a year(nor have I given it more than a second glance as far as maintenance) I guarantee it starts on the first pull next time I want to use it..... FWIW I have never knowingly had a stale fuel problem.... your results may vary
Well, that's the first time I've heard you compare proper maintenance between a MC and lawnmower....Good job... I agree, I would not stabil your lawnmower either. Although Mine gets it.
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Old 01-23-2007, 12:00 PM
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I figure any neglect should first be tested on items such as lawnmowers (and individuals you don't care about)
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