Viscosity Grade Best For Key Performance Benefit 0W-20 Most daily drivers Optimal cold flow, fuel efficiency, year-round protection 5W-30 High-performance/track use Enhanced high-temp film strength, stability under stress Synthetic vs. These additives help to prevent the buildup of harmful deposits and keep the internals clean, which is critical for maintaining optimal compression and power output over the life of the engine.
Achieving Dexos1 Gen 2 Certification for the L87 Engine
Selecting the correct lubricant for your General Motors 6. Viscosity: The First Critical Decision Viscosity, or the oil's thickness, is the primary specification to consider.
Using an oil that simply claims to be "dexos compatible" is not enough; you should look for the explicit dexos1™ Gen 2 certification on the bottle. Conventional mineral oils simply cannot match the thermal stability and longevity of synthetics.
Achieving Dexos1 Gen 2 Certification for the L87 Engine
GM’s own dexos1™ Gen 2 specification is the gold standard for modern GM engines. Decoding Performance Specifications Beyond viscosity, the oil must meet specific industry certifications to ensure it contains the necessary additives for the L87.
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