If you haven’t noticed, modern gas sucks, especially ethanol blends. Nothing turns to tar, gum and varnish or drops octane and/or ignitability faster. Plus, ethanol-blended fuels readily absorb water (even from the air!), which can lead to phase separation, a phenomenon where water-saturated ethanol actually drops out of solution and forms a separate watery layer in your tank. Octane drops, rust ensues and the only “fix” for phase-separated fuel is a complete draining and cleaning of your motorcycle’s fuel system. Ethanol itself is also quite aggressive, potentially harming rubber, plastic and fiberglass components, particularly those of older machines. To help combat these problems, Eastwood offers Fuel Guard in both Ethanol Protection Formula ($7.99; an 8-ounce bottle treats up to 30 gallons) and Ethanol Stabilizer Formula ($9.99; 8 ounces treats up to 20 gallons in stored vehicles for as long as 12 months). Your pilot jets or fuel injectors will thank you.