Dexos® 1 Gen 3 is here.

GM’s next generation dexos® 1 specification, dexos® 1 Gen 3, has arrived. The challenges being posed by new engine hardware and technologies are being met head on– so here’s what you need to know.


The dexos® specification and trademark are exclusive to General Motors, LLC.

Dexos 1 Gen 3 Logo

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Using substandard oil can affect engine performance and, in the worst-case-scenario, may damage or harm the engine. GM wants to make sure that every car, anywhere in the world, regardless of manufacturer, has access to the highest quality oil. The dexos® engine oil specification represents a high quality, robust oil formulated to some of the most rigorous specifications in the industry. Only licensed dexos® products have been certified by GM to meet the dexos® specification.

Dexos® 1 Gen 3 is being used by GM to meet their newest hardware performance needs. GM has once again improved performance with dexos® 1 Gen 3 in almost all areas, adding increased performance limits for the existing tests and replaced the legacy GMVFE fuel company and GMSPI low-speed preignition tests with more demanding versions. Areas where Gen 3 outperforms Gen 2 are:

  • Fuel Economy and Fuel Economy Retention
  • Sludge Control
  • Viscosity Increase Resistance
  • High Temperature Deposit Control
  • Volatility
  • Chain Wear Resistance
  • LSPI Prevention
  • Turbo Protection

Dexos 1 Gen 3 Spider Diagram

Yes , dexos®1 Gen 3 is backward compatible with previous generation dexos®1.

SUPREME Synthetic 0W-20, 5W-30 and 5W-20 and SUPREME Synthetic Hybrid 0W-20 are licensed by GM and were designed to exceed the GM dexos® 1 Gen 3 global gasoline engine oil specification. These oils have gone through rigorous testing requirements and help protect gasoline direct injected and turbocharged direct injected engines from accelerated timing-chain wear and harmful damage caused by abnormal combustion events.

GM dexos® 1 Gen 2 products were still available when Gen 3 products hit the shelves due to inventories transitioning. All Gen 2 products are now obsolete and all suppliers and customers should be using GM dexos® 1 Gen 3 licensed products.

To find out more on dexos® 1 Gen 3, contact us: https://petrocanadalubricants.com/contact-us.



Published on 06-03-2024
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