FRAM Tough Guard Oil Filters are engineered with a blend of cellulose and synthetic media to provide an outstanding 99% dirt-trapping efficiency. The silicone anti-drain back valve is designed to hold oil in the filter to ensure safe start-up and engine protection for extended drain intervals. Proven protection for up to 15,000 miles when used with an appropriate motor oil 99% dirt trapping efficiency High quality synthetic-blend media traps and holds dirt and extends the life of the filter Premium silicone anti-drainback valve helps eliminate dry starts to ensure safe start-up (for filters equipped with an ADBV) Internally lubricated sealing gasket for easier filter removal