John Deere YU76215050 Cool-Gard II is a premium, heavy-duty engine coolant and antifreeze specifically formulated to provide optimum protection against corrosion and deposits in all John Deere engines. This long-life coolant offers maximum protection for wet-sleeve cylinder liners and is compatible with other coolants. It is suitable for use in all diesel and gasoline engines, including those with aluminum components. Cool-Gard II provides extended service intervals of up to 6 years or 6,000 hours in John Deere engines, and up to 3 years or 3,000 hours in other engines. This container holds 1 US gallon (3.78 liters) of coolant.