What does Chevy use for oil?
Chevrolet generally requires Dexos-certified synthetic motor oil for most modern engines, with Dexos1 Gen 2 favored for gasoline engines and Dexos2 for diesel engines. Common viscosities include 0W-20 and 5W-30, but the exact specification depends on your model and year. Always check the owner's manual or the oil fill cap for the precise requirement.
Oil specifications Chevrolet uses
Chevrolet follows GM’s Dexos oil standards to ensure engine protection and emissions compliance. The main families you’ll see are Dexos1 (gasoline engines) and Dexos2 (diesel engines and certain gasoline engines that require low-SAPS oil).
Gasoline engines
Most Chevrolet gasoline engines built from the early 2010s onward use Dexos1 Gen 2 oil. The typical viscosity for many modern engines is 0W-20 for fuel efficiency, with 5W-30 used in some engines or climates as specified by GM.
- Dexos1 Gen 2: GM’s current standard for gasoline engines; supports emissions systems and catalytic converters.
- Dexos1 Gen 1: Older GM gasoline engines may specify Dexos1 Gen 1 in some markets or model years.
- Dexos2: Some Chevrolet gasoline engines that require low-SAPS oil or have particular turbocharged systems may specify Dexos2.
Oil specifications can vary by model and region, so verify the exact requirement in the owner’s manual or on the oil fill cap.
Diesel engines
Chevrolet diesels, including most Duramax engines, typically require Dexos2 oils designed for diesel applications and low-SAPS formulations. The viscosity for these engines commonly ranges from 5W-40 to 15W-40, depending on the engine model and climate, as specified by GM.
- Dexos2: GM specification for Duramax and other diesel engines; often paired with higher-performance or low-SAPS formulations.
- Low-SAPS Dexos2 grades: 0W-40, 5W-40, or similar grades may be specified depending on climate and engine.
Note that some older diesel engines or regional variants may have different requirements; always rely on the official manual.
Oil viscosity guidance by model and year
Viscosity recommendations aren’t universal across all Chevy models. The prevailing trend in recent years is 0W-20 synthetic for many modern gas engines to boost efficiency, with 5W-30 used in certain engines or climates. Diesel engines commonly call for 5W-40 or 15W-40, depending on the specific Duramax engine and operating conditions. Always confirm the exact grade and Dexos specification for your vehicle in the owner’s manual.
- 0W-20: Widely used in many newer gas engines for cold-start performance and efficiency.
- 5W-30: Used in some engines, especially older designs or regions with hotter climates.
- 5W-40 / 15W-40: Typical for diesel engines and some high-load gasoline engines; verify for your model.
You can usually find the required oil specification on the engine oil cap or in the owner’s manual. If in doubt, consult a GM-certified technician or your dealership.
Where to find the exact oil spec for your Chevy
To ensure you’re using the right oil for your Chevy, consult these sources:
- Your vehicle’s owner’s manual: The most authoritative reference for engine oil type, viscosity, and Dexos specification.
- Engine oil cap: Some models display the required Dexos specification and viscosity on the cap.
- Chevrolet dealership or GM customer service: If you’re unsure, a trained technician can confirm the exact spec for your VIN.
Relying on the manual helps avoid issues with warranties and engine protection, especially if you drive in extreme temperatures or tow heavy loads.
Takeaways for Chevy owners
In short, Chevrolet cars and light trucks today typically use Dexos-certified synthetic oil, most often Dexos1 Gen 2 for gasoline engines and Dexos2 for diesels or select low-SAPS gasoline engines. The common viscosities range from 0W-20 to 5W-30 for gas engines and 5W-40 to 15W-40 for diesel engines, with exact requirements varying by model year and region. Always verify the exact specification for your vehicle in the owner’s manual or with a GM-certified technician.
Summary
Chevrolet’s oil strategy centers on Dexos specifications and model-specific viscosities. Dexos1 Gen 2 covers most gasoline engines, Dexos2 covers diesel engines and some select gasoline engines, while older Dexos1 Gen 1 may appear on older models. Typical viscosities include 0W-20 for modern gas engines and 5W-30 in certain cases; diesel engines commonly use 5W-40 or 15W-40. Always confirm the exact requirement for your vehicle to maintain performance and warranty protection.
