I can say For Sure the fuel in it was NOT good when i bought it. I asked the 82 year old grandfather who sold it to me about how long the gas had been in it and told him about the trouble with ethanol these days. He said it was just a year old and treated with the best... "a marine stabilizer". First thing i did when i got it home was drain out all the gas into a pan. A few hours later (i wish i took a picture of it) the water and crud separated out of the gas and sank to the bottom. It looked BAD!! and there was a Lot of it too! Either the stabilizer didn't do Jack, or it had been many years.
We can't get gas without ethanol around here, so this year i bought some 2cycle TrueFuel at home depot, put a bit in the snow blower and chainsaws, ran them for a minute, and tucked them away. That stuff is stabilized for two years and no ethanol. I hope it works better than whatever the old man did!!