For smaller 2 cycle engines (chain saws, string trimmers, etc.) you can also buy small volumes of pre-blended gasoline and oil at various mixture ratios that ar

For smaller 2 cycle engines (chain saws, string trimmers, etc.) you can also buy small volumes of pre-blended gasoline and oil at various mixture ratios that are ethanol free. You can find these near the mower section in most of the big box hardware stores. It's not cheap compared to blending your own, but it keeps my tools very happy. Though I generally have tried to move away from 2 cycle tools to LiPo electric ones where feasible. My electric push power works really well, and I maintain a little under 2 acres of grass.