Twin Power Premium Engine Oil is formulated to protect American V-Twin motorcycle engines under the most extreme operating conditions. Designed with a special additive package to extend engine life and allow for cooler operating temperatures. Meets or exceeds all manufacturers warranty criteria and will not void new vehicle warranty. Specially formulated motor oil for American V-Twins Superior base stocks provide more consistent viscosity, extreme wear resistance and stability at high temperatures Heavy-gauge, wide-mouth bottles make pouring easier Meets or exceeds all O.E.M. specifications Special additive package that extends engine life Boosts performance by allowing the engine to run cooler Protects against corrosion, sludge and varnish build-up Meets or exceeds all manufacturer's warranty criteria