REV-X X-TREME CLEAN with Dissolve Technology is the strongest and safest fuel system & injector cleaner available. It provides rapid cleanup of gum, varnish, and carbon deposits to maximize engine performance. X-TREME CLEAN eliminates costly ethanol issues and extends fuel storage life to over a year. It is safe for all gasoline engines & compatible with all grades of gasoline. For best results, add X-TREME CLEAN to your fuel every 5,000 miles & give your entire fuel system the cleaning it deserves!