Not just Sta-bil. Use the Marine formula Sta-bil. It has extra additives just for ethanol. I will use E-0 when I can get it but will still add the Marine formula Sta-bil for added protection. I have not had any water problems since using the additive even with 10% ethanol but I did go through a couple of thousand in repairs a few years ago the biggie being my main motor yamaha F115. Water in the fuel destroyed my high pressure pump and regulator on the fuel injector unit. OUCH!!

Bret