Red Line 85 Plus is designed for use in all diesel engines. It contains detergents, fuel stabilizers, lubricants and even rust preventers. It also contains cetane boosters which will boost the cetane levels by 5-9 points. All of these additives will help to assist starting, reduce smoking and can provide up to 5% additional power. Red Line 85 Plus complies with the federal low-sulfur content requirements.The winter blend uses pour-point reducers to keep wax in suspension and reduce the size of crystals allowing them to pass thru the filters and injectors.1 12oz bottle will treat up to 100 gallons of diesel.