The Prolong Super Lubricants Super Heavy Duty Oil Stabilizer is designed to help solve lubrication-related problems such as engine noise, oil leaks and oil burning. The Super Heavy Duty Oil Stabilizer creates a seal around the piston rings to restore compression, slowing down exhaust blow-by and reducing exhaust smoke emissions. Formulated with the company's exclusive AFMT (Anti-Friction Metal Treatment) technology, it reduces heat and friction to provide cooler running engines and will maintain viscosity in hot and cold weather. Prolong's Super Heavy Duty Oil Stabilizer will not void engine warranties and helps prevent sludge and varnish deposits. It's effective with gas and diesel engines and is compatible with petroleum or synthetic oils.