Mercury - Quickare Fuel Treatment Fuel System Additive Clean Burn Formula 8M0058680. Overview. Keeping an engine running clean isn't just about maintenance - it's about preserving those easy, effortless days on the water. You know the feeling: smooth acceleration, a steady idle, and the comfort of knowing your fuel system is doing exactly what it should. That's where this Mercury Marine part comes in. A good fuel treatment doesn't just protect the engine; it keeps the whole experience feeling fr