The John Deere CE18987 Diesel Fuel Supplement is a genuine OEM product, supplied in a 16 oz (0.473 L) container, specifically formulated to enhance the performance and extend the life of all diesel engines. This advanced supplement helps to prevent fuel gelling, improve cold weather starting, clean fuel injectors, and protect the fuel system against corrosion. It is an essential maintenance item for ensuring optimal fuel system health in John Deere machinery and other diesel-powered equipment, contributing to better fuel efficiency and reduced downtime.