Popular ethanol fuel mixtures like E10, E15 and E85 flex-fuel may contribute to fuel system deterioration and engine problems for certain vehicle owners. Encourage customers who store their vehicles for long periods of time, drive in high-humidity environments or fill trailered personal watercraft and boats at gas stations to prevent damage with new Rislone Ethanol Fuel Treatment. The super-concentrated formula provides ethanol stabilizers and conditioners not found in traditional fuel additives. Rislone Ethanol Fuel Treatment (P/N 4774) is compatible with all two-cycle, four-cycle, fuel injected, direct injected, turbo and carbureted engines. It should be used year-round for optimal protection against rust, corrosion, gum and varnish.