This product is designed to provide optimal protection for your outboard engine's fuel system. It is made by CRC, a trusted brand in the boating industry, and is ideal for use with ethanol fuel. The 16 oz bottle ensures that you can treat your fuel system effectively and maintain optimal performance. The product is easy to use and has been designed to fit most outboard engines. It is perfect for those who want to keep their fuel system clean and free from contaminants. This item is a must-have for any boater who wants to ensure that their outboard engine runs smoothly and efficiently.