Specially formulated for American V-Twins, meets or exceeds all O.E.M. specifications. Twin Power™ Premium Engine Oil is specially formulated to protect American V-Twin motorcycle engines operating under extreme conditions. It has a special additive package that extends engine life and boosts performance by allowing the engine to run cooler. Protect your ride against corrosion, sludge and varnish build-up. Meets or exceeds all manufacturer's warranty criteria and will not void your new vehicle warranty.