Santiago
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9 month old fuel?
Boat has a 39 gallon below-floor fuel tank and when we left last June, it was at least half full. I do not think I followed my 'shut-down' list on
leaving as I have since learned that I left the invertor on in the cabin. I don't recall if I put Sta-bil in the boat tank but on the assumption I
did not, how would you deal with the age of the gas? 115HP 4stroke merc with injectors. By the way, the Merc was not flushed as normal due to a
split in the fuel line allowing air to get in; I'm repairing that on next trip in April.
It's due for a spin-on fuel filter which I will do this trip as well.
I've never had an issue with sitting gas before, but I've never gone so long between trips either.
If less than half full, maybe fill with fresh?
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TMW
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Since the tank was half full there is the possibility of water in the tank. Otherwise I'd just fill it up and go.
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mtgoat666
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Gasoline should be fine, perhaps a very little bit of light end evaporated, but it will still run fine.
Your gasoline could have some water from condensation, so throw in a bottle of “gas dewater” stuff you can buy at auto parts stores.
Woke!
“...ask not what your country can do for you – ask what you can do for your country.” “My fellow citizens of the world: ask not what America
will do for you, but what together we can do for the freedom of man.”
Prefered gender pronoun: the royal we
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Bob and Susan
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tmw is correct...water is the problem...humity
always leave a big tank like that FULL
if you don't have one get a raycor water/fuel filter
you'll be happy you did
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Sr.vienes
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The smaller the container the faster it goes bad. We have left fuel in our stainless tank for that long, flush filter and lines plus any drains on the
carbs or injection system you can. Old fuel can foul plugs and even cause valve to stick and get bent. Like fish if smells real bad don’t use it.
Mainly flush till your sure all the fuel is fresh from the tank.
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UnoMas
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A bottle of "heat" from your local auto parts dealer.... fire it up and go... of course not going too far off shore until that tank is EMPTY!
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pacificobob
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is it half full?.......or half empty? that is the important question here.
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Santiago
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I'll have SWMBO check with a match when we get there.
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David K
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Isn't that how you checked Baja Nana's trash can in her bathroom, in 2003?    
Edit... or was that Debra 'Travelpearl'? (DEP)
[Edited on 3-26-2018 by David K]
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woody with a view
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If you’re worried drain it and put it in the truck. The boat motor is more particular than the truck is.
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pacificobob
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good counsel.
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bajaric
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At the junk yard the workers siphon old gas out of vehicles and filter it through a chamois cloth to use in their own cars. In addition to filtering
out sediment it also removes water.
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pacificobob
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Quote: Originally posted by bajaric  | | At the junk yard the workers siphon old gas out of vehicles and filter it through a chamois cloth to use in their own cars. In addition to filtering
out sediment it also removes water. |
while flying small aircraft around mexico in the 60s, we always used a chamois in a funnel when fueling from barrels. never had a hickup.
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aguachico
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Yup. run it in the truck/car. Check you water separator in the boat.
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