Marine Pro is a complete marine fuel system treatment. It works in fuel systems to clean and lubricate critical marine engine areas and stabilize fuel up to 2 years. Safe for all two and four-stroke gasoline marine engines, inboard and outboard. Add Marine PRO to every tank of fuel to help your marine engine start faster, run smoother and last longer. Marine PRO helps overcome and prevent common marine engine problems so you can spend more time on the water and less time worrying about your engine. Fuel residues are the #1 cause of marine engine problems like rough idling, hard starting and loss of power. Marine PRO cleans and prevents fuel residues to help your engine start easier and run smoother. Marine PRO adds high-temp lubricity to fuel, working to help upper engine parts resist long term wear. Marine PRO is always working to keep fuel fresh and to protect fuel system parts and components from the harmful effects of ethanol and water. Marine PRO is made with 100% safe petroleum cleaning and lubricating ingredients. It can’t harm engine parts, fuel system parts or seals. Marine PRO is safe and effective in any gasoline marine engine.