Duramax synthetic blend motor oils provide superb performance for today's gasoline-powered cars, suvs, light trucks and vans. Duramax synthetic blend motor oils are specifically formulated to reduce fuel consumption, promote clean engines and extend engine life. Duramax motor oils are completely compatible with mineral or other synthetic oils. Duramax synthetic blend motor oil uses an advanced additive system blended with synthetic and conventional base oils to deliver the following benefits: Advanced additive detergency that fights deposit build up, enhanced wear protection in both low and high temperature climates, improved fuel efficiency, superior resistance to viscosity breakdown in severe environments, excellent sludge control, helps protect emission systems and excellent protection of critical turbo components.