Star tron enzyme fuel treatment is a multifunctional fuel additive which uses a unique enzyme technology that allows all engines to start easily and run smoothly, even when using ethanol-blended fuel or after sitting idle for months.Features Cures and prevents most ethanol problems Makes all engines start easily, run smoothly; improves performance Removes and prevents gum, carbon and varnish Works in all engines and in all fuel Helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that are safely eliminated while the engine operates Improves performance and fuel economy Stabilizes fuel; helps rejuvenate old fuel Reduces smoke and all other emissions Keeps fuel delivery system clean Specifications Capacity: 32 oz Dimension: 3 H x 4.5 W x 10.25 L Weight: 2 lbs DirectionsAlways add Star Tron just before each fuel fillup. Remove cap and pour the prescribed amount into tank. Overdosing is not harmful.