GM dexos R Raises the Motor-Oil Bar for High-Performance Engines

GM* recently launched a new motor oil performance standard with its proprietary dexos R* motor oil specification. Dexos R denotes 0W-40 and 5W-50 motor oils that can withstand the rigors of high-speed and high-load conditions created during high-performance driving. It was developed for high-performance engines like those in the Corvette*. GM says dexos R oils meet or exceed the performance of dexos2 and dexos1 Gen 2 and Gen 3 oils and are backward compatible, so gasoline engines that used those oils may use a licensed dexos R oil of the appropriate viscosity grade.

Modern engines with high power density, forced induction, multi-point fuel injection, cylinder deactivation and emissions systems are driving demand for more advanced lubricants. High-performance vehicles push those technologies to another level, requiring a motor oil that can protect components operating in extreme heat and high-load conditions.

AMSOIL Signature Series 0W-40 and 5W-50 are recommended for applications that require GM dexos R.

AMSOIL has pushed lubricant technology to new levels since 1972 when AMSOIL 10W-40 Synthetic Motor Oil became the first synthetic motor oil in the world to meet American Petroleum Institute service requirements. Since then, we have never stopped pushing ourselves to develop more-advanced formulations. The result? We continue to produce the best motor oils on the market.

This article is part of our Motor Oil Specifications guide. See every article in the guide.

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