Choose your poison.
https://www.goldeagle.com/brands/sta-bil/?srsltid=AfmBOoonaRXeiEj5ln9c5KZ5EKofB2Py1BMyVoGPgxowsVWBteLZK4ta
I use non-ethanol in my OPE. However, I use Sta-Bil 360 (now called Sta-Bil Seasonal). I add the Sta-Bil Storage to the last gasoline purchase of the mowing season.