General Motors (GM) Specifications
The GM dexos® specifications and trademarks are exclusive to General Motors, LLC. Motor oils engineered to meet the GM dexos® specifications are robust, high performance formulations that are recommended for all 2011 and newer GM vehicles. Motor oils that have been certified by GM to meet the dexos® specification have gone through GM’s rigorous testing process, are monitored for quality and are approved and recommended for use in GM vehicles. GM markets the dexos® specification through its AC Delco brand and several oil brands market synthetic motor oils that are and licensed by GM. GM’s major specifications are dexos® 1 and dexos® D. GM dexos® 1 specified motor oils are engineered for vehicles equipped with gasoline engines. GM dexos® D specified motor oils are formulated for light-duty diesel engines.
For a deeper dive into specifications, see the Lubrizol Ready Reference Guide, the industry's go-to resource for understanding fuel and lubricant performance principles and requirements.
June 14, 2019
Lubrizol business manager, Martin Birze, and PhD chemist, Matt Gieselman, discuss LSPI and why oil specs are changing.
July 02, 2016
General Motors (GM) has introduced the second generation of its dexos1™ specification.
July 02, 2016
General Motors’ (GM) proprietary dexos1™ specification for gasoline engines is entering its second generation.
June 15, 2015
The manual transmission (MT) continues to be the leader, accounting for almost half of all global production.