I have two containers. About 1.75 gallons each. One is a bit older (nastier) than the other. I need to get rid of it. I would use to light slash piles but our burn season is over. The newer of the two I would think would be no problem mixing in with good gas to run through the Kawasaki engine. The other batch I dunno? thoughts

I disposed of old 2 stroke gas by burning it in my pickup. The truck tank capacity is 34 gal, so ~1gal of old gas never caused any issues.

bad idea. don't burn that shit in a good engine like that. It's like drinking cheap wine on the verge of turning into vinegar. Except the bad gas will degrade the fuel system of your engine. For what, to save $3 bucks? Really ?

Seriously? Just take it to the local dump and pour it in the recyling drum for used lubricants and engine oils. I mean, this is a simple problem that requires no thought. Don't put 2-smoke oil + gas in a 4-stroke engine.

The obvious answer is don’t do it especially not in an engine that doesn’t have fancy electronics to retard timing to minimize detonation.

The real question is: How do you dispose of old gasoline? How 20 about gallons or more?

I have burned it in our highway vehicles, on the advice of my mechanic, and there were no problems.We have changed boats/motors/tanks four times in the last 10 years, so it comes up fairly frequently.

Save it until next burn season.

Burn with the old stuff.
Pour the newer stuff in before you fill up.


(Of course, I once ran a car on two-stroke mixed gas exclusively for a good 8-10 months. lol)

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I have burned it in our highway vehicles, on the advice of my mechanic

Get a new mechanic asap. At least if your "highway vehicles" are modern emission engines. Two stroke oil has the potential to damage very very expensive catylitic converters.

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The real question is: How do you dispose of old gasoline? How 20 about gallons or more?

I have found two ways. Periodically we have haz mat days and they will often take it. I live in the cold north and many shops run used oil and gas burners to save money. They can often take it and burn it. I don't know if that option exists in warmer climates.

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Originally posted by stiab:

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Originally posted by stiab:
[QUOTE]Originally posted by hrcjon:
[QUOTE]I have burned it in our highway vehicles, on the advice of my mechanic

Get a new mechanic asap. At least if your "highway vehicles" are modern emission engines. Two stroke oil has the potential to damage very very expensive catylitic converters.

Not necessary, a few gallons spread among four vehicles burns on the highway just fine and dandy. You may be unaware of the SMALL amount of oil required by recent 2 cycle outboards, not like yesteryear.

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Originally posted by wrightd:
bad idea. don't burn that shit in a good engine like that. It's like drinking cheap wine on the verge of turning into vinegar. Except the bad gas will degrade the fuel system of your engine. For what, to save $3 bucks? Really ?

I recently retired from 30+ years of boat repair. I've "disposed" of a lot of old gas this way. And it's not really about saving $3. How do you responsibly dispose of old gas? Hazmat collection around here is virtually non existent. Some burn it on their brush pile. I burn it in my truck. None of my work trucks had any fuel system related problems.

My thoughts would be to save it for future brush burning, won’t get to old for that.

If fairly fresh, I wouldn’t have a problem mixing it with fuel in a highway vehicle, maybe older the better. How about a little in a mower, if you do that.

I burn brush at times, good way to get rid of many things.

I wouldn't risk it........why, to save a few dollars? Get rid of it.......pour a little at a time on rocks and let it evaporate.

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You may be unaware of the SMALL amount of oil required by recent 2 cycle outboards, not like yesteryear.

I'm fully aware of 2 stroke oil mix ratios. I'm also fully aware of the cost of modern cats. So who in their right mind would take the risk of a couple of gallons of bad gas possibly destroying a couple of thousands of dollars of cats. Makes zero sense to me even if you personally have gotten away with it. Burn it, bury it, recycle it, use it on your burn pile, put it in your $200 lawnmower, whatever, but don't put in your emissions controlled vehicle. That's beyond stupid.

Ok guys, appreciate the thoughts and advice.

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Originally posted by hrcjon:
That's beyond stupid.

You have your opinion based on zero actual experience, I have my opinion based on actual experience with a 1 to 100 oil mix, that was not "bad gas" as you describe it. Your opinion is only that, an opinion, and does not make other opinions "stupid".