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Ethanol in gas is bad. Here's how to remove it. Go to WallyMart and get an empty 5-gallon clear plastic jug. Go to gas station w/gas can and get say 2 gallons of PREMIUM gas. Pour gas into clear 5 gal jug. Add 16 ozs or so of water. Shake shake shake shake and then some more. Let it settle. The ethanol will now be combined with the water and is easily seen. Siphon out the fuel into a fuel can. Discard the H2o/alcohol mix. Can only help small engines.
I would but with your money. I'd rather make something and be proud of my accomplishment.