Red Line 85 Plus is formulated for use in all diesel engines to improve lubricity and cetane, assist starting, reduce smoking, and prevent fuel system wear and leakage. A combination of powerful lubricants, detergents, seal conditioners, and rust preventatives, but without conventional smoke suppressants. Instead, Red Line 85 Plus contains cetane improvers to boost fuel cetane numbers by 5-7 points and additional lubricants which can reduce wear in low-sulfur fuel by 75%. Use of 85 Plus can provide up to 5% additional power and efficiency. One 12-ounce bottle treats 100 gallons.