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I usually give my boat a mid winter run down, meaning a wash and wax, change the engine oil and filter etc. Well I have let my gasoline get away from this year. I rarely used my boat this summer because of the oil spill and I have left the untreated gasoline in the boat since I would say mid October. What would you do? It's probably about twenty gallons. Would you drain it and start fresh, or top it off with another 60 gallons and marine grade sta-bil? I lean towards draining, but then there are the logistics of storing then getting rid of the bad gasoline. ARGH! I just don't know what to do?

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Well, you don't say what boat you have but I assume it is larger if it can hold 80 gallons of fuel.

If you only have 20 gallons in the tank now I would not worry about it in the least.

Top off the tank before you use it next and you will be just fine.

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Sorry about that. I have a 220 Dauntless. BW website says 90 gallons although I've never put more than 60 gallons in it at a time.

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Don't worry about it.

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I agree. You should be fine. But just in case you should always carry a few extra fuel filters with you.

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Similar question, bought a used 17 foot and have about 9 gallons of gas in an 18 gallon tank - based on what the owner told me, maybe about a year since he ran the boat. 1984 Johnson 75 HP engine. I am just having a hard time trying to find a place that will take the gas and not the tank....Thanks

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I ran into a similar situation, they won't pour it out of your tank because they have no receptacle the hold it. I went to the fire department and asked them and here's what they said. Pour it in a container/pan and set it outside and let it evaporate. There is no law about let it evaporate. And amazingly in the summertime it did evaporate very fast. The other thing you could do is buy some cheap containers and put your gas and that take it to the recycle center. But you're right in not getting get the container back. if your gas as not turn to a varnish you could clean the tank and refill it was small amounts of your bag gas so it would be deluded enough to burn with your good gas. I've been told by the lawnmower shop that gasoline loses a lot of its octane in about a month's time, don't know how true this is. But they swear it is so.

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Thanks Guts!

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Sebastian,

Put an ad on your local Craig's List advertising free old gas, suitable for yard equipment, etc. and the approx amount you have. I'd be surprised if you didn't get a few replies from guys who will come and pump it into their own containers. I did, that same day I placed the ad, it was gone.

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Great Suggestion - I'll give it a try!

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Your gas isn't that old. You can add some more gas (maybe 20 gallons) and stabilizer and should be fine. If your worried, just siphon it out and run it threw your daily drivers. I had a truck with a blown motor sitting for 2 years recently. I siphoned out the gas and put 4 gallons each time into each off my drivers (so about a 20-25% concentration.) I didn't notice any problems.

Years ago I ended up with some old gas in another car and ran it through my lawn mower, about the 5th year I had a hard time starting without using starter fluid to get it running, this was pre ethanol days though.

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Hey guys, thanks for the suggestions - I was able to give the gas away within 24 hours! Thanks for the help!

Anyone know the best way to clean the tank? Just water or do I need to add anything? Thanks!

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This will work if you have a pickup truck. Find some old gas containers and pour the bad gas in them. Then drive your pickup to the convenience store and park it in an out of the way but visible spot for a few hours. When you come back for your truck your gas and your gas cans will have disappeared.

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You need to move to a safer community Binkie....LOL

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People love free stuff. Especially free gas! I got rid of 16 gals this way last summer.