Advanced lubrication and protection from Twin Power. This fully synthetic-based oil provides higher film strength, better low-temperature performance, superior wear protection and exceptional performance over a wider range of temperatures. If you are looking for something that protects against corrosion, sludge and varnish build-up, this is the oil for you. It meets or exceeds all manufacturer's warranty criteria and will not void new vehicle warranty, and meets or exceeds API CI-4/SL service classification.