Dexos2: Key Differences Released in 2009, the original dexos1 specification targeted enhanced sludge control and deposit prevention for vehicles using lower-viscosity fluids. The certified formulations help maintain the precision fit between moving parts, which supports consistent power delivery.
Understanding GM Certification and What It Means for Your Engine
Specification Primary Focus Typical Applications dexos1 Sludge control and deposit protection Pre-2011 GM gasoline engines dexos2 Fuel economy and turbo protection 2011 and newer GM engines Benefits of Using Certified Oil Engines built to tight GM tolerances respond best to lubricants engineered for those exact parameters. For General Motors vehicle owners, understanding the specifications required for maintenance is critical for long-term performance.
Over the life of the vehicle, this can translate into reduced maintenance costs and a lower likelihood of premature component failure. While both standards cover gasoline engines, dexos2 places stricter requirements on oil longevity and thermal stability.
Understanding GM Certification and What It Means for Your Engine
Using a non-certified oil risks inadequate protection, which can lead to increased engine wear or reduced efficiency over time. When you see the dexos1 or dexos2 certification mark on a container, it confirms that the oil has passed a series of rigorous laboratory tests designed by GM.
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