I just bought some red armor stuff because that is the only name brand stuff that home depot had, it was short notice and my buddy and i needed alot of gas to finish a job by the end of the day(cutting wood) and the stuff was great, the saws didnt smoke, and mine (homelite super 2 made in 1986) didnt smoke at all!! and neither did my friends poulan 520. i like it, but i normally buy a gallon of penzoil and just measure the right amount of oil to gas.