Bar's Products' Bar's Leaks Engine Repair (p/n 1000) is a chemical tool that uses an exclusive two-part formula to repair most common oil-related problems. It is said to restore lost compression and power, reduce noise and oil consumption and improve the performance of worn cylinders, rings, bearings and seals. It works in all engines, including gasoline, diesel, hybrid and turbo, and with any type of engine oil, including petroleum, synthetic and high-mileage formulas. It can be used to top off existing oil or added during an oil change. One bottle treats four to six quarts of oil.