Stihl or Husky Synthetic @ 32 to 1 with non Ethanol 90 plus and there you have the best all-around mix for all 2 stroke gassers, really a little rich for many who call for 50 to 1 (saws and such) but you won't hurt an engine by being a little rich. I put a lot of 50 to 1 thru a G-38 with no problems.