Thanks. I did start using premixed fuel for my two cycle trimmer and blower about 3 years ago after having carb problems for years. Seemed to solve the issue. As for non-ethanol gas for the mower, being four cycle, I'm not sure how to go about finding that. Would it be "premium" gas at the gas station or ? I just used the last of my gas yesterday in the mower and time for refilling the storage tank, so the right time to ask. Thanks again.