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Old 08-31-13, 07:49 PM   #1
himespau 
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how long does 50:1 gal/oil last?

This is our first year with a house of our own. Thus, it's the first (well, second we had to do a bit last year at both houses we rented, but weren't in charge of mowers or fuel) year we've been doing lawn care. My 50:1 fuel mixture for the weed whacker is just about gone. (Also just about out of gas for my mower, but any left at the end of the season there can just go in my car tank.) So, if I buy more, I pretty much have to do a gallon (unless I get one of those little premixed cans at the hardware store). No way I'm going to use a gallon of fuel in my weed whacker between now and winter. Any chance the stabilizers in the 2 stroke fuel oil mix you add to the gas will keep it good until next spring?
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Old 08-31-13, 07:59 PM   #2
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I never make more than a gallon for the chain saw and weed wacker. I bought a small graduated beaker from American Science & Surplus to measure the oil. dump tanks and run carbs out in the fall, keep the mix over winter in case I need the saw, then dump the gas if any's left in the car in spring.
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Old 09-01-13, 10:10 AM   #3
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The oil should last a good long time. If you have ethanol in your gas, it will turn it into sewage in a few months. I buy the cans of pre mixed fuel for my leaf blower at Sears or the local hardware store. It's expensive but it has a much longer shelf life and I have never had any trouble starting the blower. One thing that helps is that I try to start it and let it run for a minute or two every month.
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Old 09-01-13, 10:46 AM   #4
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hmm, maybe I'll buy another of those cans of fuel to get me through the year and then make my own up fresh next spring.
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Old 09-03-13, 10:03 AM   #5
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Some of the premix comes with Stabil in the mix to extend the shelf life. But what doesn't get used in the winter equipment goes in the summer stuff, and doesn't sit around for too long. I usually mix it in the 32:1 ratio, and everything runs fine.
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Old 09-03-13, 10:15 AM   #6
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I agree with the reply above, if there is ethanol in your gas, and there likely is, I wouldn't trust it much more than a few months at most. You could use some stabilizer and that would likely keep it good until next spring. The stabilizers, stabilize the ethanol.
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