Chevrolet does not mandate a single brand; it requires oils that meet the Dexos1 Gen 2 specification for most gasoline engines. In practice, many brands offer Dexos1 Gen 2-certified oils, so you can choose from several reputable options.
What oil specification does Chevy require?
Chevrolet’s guidance centers on using motor oil that meets the Dexos1 Gen 2 specification for most current gasoline engines. This specification sets performance and compatibility standards, and the exact viscosity (such as 0W-20 or 5W-30) depends on your specific engine and climate. Always verify the exact requirement in your owner’s manual or with a Chevrolet dealer.
Dexos1 Gen 2 vs Dexos2
Dexos1 Gen 2 is the GM specification primarily for gasoline engines, while Dexos2 is used for diesel engines and certain high-performance or European-market applications. If your Chevy has a diesel engine or a model-specific note calls for Dexos2, follow that guidance. For many Chevrolet gasoline engines, Dexos1 Gen 2 is the standard requirement.
Brand options that meet the Dexos1 Gen 2 specification
There are several widely available brands that offer Dexos1 Gen 2-certified oils. When shopping, look for the Dexos1 Gen 2 label on the bottle and match the viscosity to what your manual recommends.
- ACDelco Dexos1 Gen 2 oils
- Castrol Dexos1 Gen 2 oils
- Pennzoil Dexos1 Gen 2 oils
- Mobil 1 Dexos1 Gen 2 oils
- Valvoline Dexos1 Gen 2 oils
- Shell Dexos1 Gen 2 oils
Conclusion: Using any of these brands with Dexos1 Gen 2 certification aligns with Chevrolet’s oil requirements for most gasoline engines. If you’re unsure, check your owner’s manual or ask your dealer to confirm the exact spec and viscosity for your vehicle.
How to choose the right viscosity and confirm certification
To ensure you pick the correct oil, follow these steps:
- Consult your owner’s manual for the recommended viscosity (for example, 0W-20 or 5W-30) and the Dexos1 Gen 2 requirement.
- Look at the oil bottle to confirm it carries the Dexos1 Gen 2 certification. The label or product description should clearly state this.
- Choose a reputable brand that offers the required Dexos1 Gen 2 oil and is readily available in your region.
- Consider the driving conditions and climate; severe operating conditions may justify a particular viscosity or synthetic formulation recommended by Chevrolet.
Conclusion: Verifying Dexos1 Gen 2 certification and using the viscosity specified in your manual helps protect the engine and maintain warranty coverage.
Summary
Chevrolet’s oil guidance centers on using oils that meet the Dexos1 Gen 2 specification rather than a single brand. You can select from several major brands—ACDelco, Castrol, Pennzoil, Mobil 1, Valvoline, Shell—as long as the oil is Dexos1 Gen 2 certified and matches the viscosity listed in your owner’s manual. Always verify the exact specification and viscosity with your manual or a Chevrolet representative to ensure compatibility with your model and driving conditions.
What oil is best for chevys?
Chevrolet engines typically require SAE 5W-30 Dexos1-certified full synthetic oil for gasoline engines. This specification ensures that the oil meets stringent standards set by General Motors for viscosity, wear protection, and engine cleanliness.
What brand of oil does Chevrolet dealership use?
Selecting your oil
From conventional to full synthetic, your Chevrolet Certified Service experts offer a range of oil types, including ACDelco Conventional Oil, ACDelco dexos1TM Full Synthetic, and Mobil 1TM Full Synthetic.
Which oil brand is best for Chevy?
Selecting the right oil
- ACDelco Gold Conventional Oil. Offers quality engine wear and corrosion protection.
- ACDelco Dexos1™ Full Synthetic. Offers high resistance to oxidation and oil break-down.
- Mobil1™ Advanced Full Synthetic. Offers advanced anti-wear technology for outstanding protection of critical engine parts.
What happens if I don't use Dexos oil?
Using oil that doesn't meet Dexos standards in an engine that requires it could void your warranty. Dexos is highly regarded, and many automakers now use oils that meet or exceed these standards. One major benefit of using Dexos-approved oil is the peace of mind it offers.


