Maintains and regenerates rubber and plastic seals in the engine oil circuit of gas and diesel engines. Oil consumption due to aged and hardened valve stem seals is reduced. Reduces exhaust smoke and emissions. External leaks are minimized or even eliminated. Dampens engine noise and lowers repair costs. Reduces pollution and improves the environment. Use in 4-stroke gas and diesel engines, with or without turbochargers. Miscible with most commercially available motor oils. Safe for use with catalytic converters and particulate filters (GPF/DPF). One full can (1 l) used with 10–15 Liters (10.5 to 16 U.S. Qts) of motor oil.