how much fuel in the tank when winterizing?

boatman37

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hope this is the right place to post this. not really an engine question. how much fuel should i leave in the tank when winterizing? i'm in pittsburgh and we usually see temps in the 10's or 20's. it will be stored outdoors but winterized by a local marine shop. its a 75 gallon tank. i ask now cause next time on the boat i will likely be putting fuel in but don't want to fill it up if i should be storing it empty
 

alldodge

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Oh goody, the fuel tank question has come again. Let the opinions go forth and reach far and wide.

Opinion: Leave it where ever you like, it will be fine in the spring
 

oldjeep

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Oh goody, the fuel tank question has come again. Let the opinions go forth and reach far and wide.

Opinion: Leave it where ever you like, it will be fine in the spring

X2 whatever is in it, no snake oil, start it up and use it in the spring.
 

smokeonthewater

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The manufacturers specify as close to full or empty as possible... I prefer empty since gas I buy in the spring is fresher than last year's leftovers.
 

Scott Danforth

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:popcorn:

ooh, a fuel full vs empty for winterization thread..... (if you do a search, you will find literally hundreds of threads - almost as much as oil threads.)

I have done both
 

GA_Boater

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I've done full, empty and between. Plain E10 since forever and no additives. No problems come first splash of the year.
 

LuckDay

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Quick question: are you talking gasoline or diesel? Big difference is storage procedures.
Joe
 

TruckDrivingFool

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My ?2

Metal(steel) tank full non ethanol to keep the inside from rusting. Plastic tank doesn't matter.

I am a snake oil (Sta-bil) user though so rank my reply where you may.
 

MTboatguy

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It really does not matter, I just went boating last weekend on fuel I bought back in April and it ran just fine with no problems at all, no snake oil or anything.
 

Watermann

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Never have thought or worried about it but I use non E gas without anything added to it.
 

sublauxation

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I hate ethanol so please excuse any bias I show here. I've left mine everywhere and anywhere from full to empty, sometimes with Stabil and sometimes without. I'm knocking on wood as I say this but my lawnmower and weedeater are 14 years old and all still start up in the first couple pulls each spring. Same goes for the Evinrude. The chainsaw I run empty each use because I hate chainsaws. All the gas I use has 10% ethanol, again except for the chainsaw.
 

JoLin

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Near the end of the season I StaBil-ize the fuel so that treated fuel is in the tank, lines and carbs. Then I lay it up with whatever level is in the tank.
 

redneck joe

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I treat it like my freezer. Keep as full as possible never know what tomorrow brings.
 

wahlejim

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Metal tank: full, Plastic Tank: Doesn't matter... I always keep at least some fuel in it so when I get it ready for the summer (flushing out anti-freeze, de-fogging, fine tuning/tinkering) I don't have to run to the gas station.
 

roffey

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Correct me if I am wrong but the problem is the water in the ethanol fuel separating and causing corrosion and just bad gas. The higher octane gas does not have this problem of water separation (to the same degree)? I have an old car in my drive way that has sat for two years now, I start it up once a year and have never had a problem. My lawn mower and other small motor equipment sits with different levels of gas and I have no issues.

So in short more gas more water but a full tank wont rust, less gas less water but more room to rust and corrode.
 

WIMUSKY

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Didn't read thru the thread once I saw the title. I leave as little as possible so I can put as much fresh as possible come spring. I like snake oil a.k.a. Seafoam. :) Did I mention I always use premium? And Chevy, hands down........ Now synthetic or mineral........:laugh:
 
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