In short, the 2015 Malibu uses Dexos1 Gen 2 synthetic motor oil, with 0W-20 recommended for the 2.5L engine and 5W-30 recommended for the 2.0L turbo.
The 2015 Malibu was offered with two engines: a 2.5-liter inline-four and a 2.0-liter turbocharged inline-four. Chevrolet specifies oil that meets the Dexos1 Gen 2 specification for both powertrains, but the viscosity varies by engine. Using oil that does not meet Dexos1 Gen 2 can affect performance and warranty coverage, so verify the correct grade for your engine and climate by consulting the owner’s manual or a Chevrolet service center.
Engine-specific oil requirements
Because the Malibu was sold with two engines in 2015, the oil specification depends on which engine is in your car. The following details summarize the official recommendations.
- 2.5L inline-four engine: Dexos1 Gen 2 synthetic motor oil, 0W-20 viscosity.
- 2.0L turbocharged engine: Dexos1 Gen 2 synthetic motor oil, 5W-30 viscosity.
In practice, garages and parts stores typically stock Dexos1 Gen 2 oils in these viscosities. Always confirm that the product label indicates Dexos1 Gen 2 to ensure compatibility with your Malibu.
Why Dexos1 Gen 2 matters
Dexos1 Gen 2 is GM’s certification for gasoline engine oils, ensuring proper detergents, additives, and compatibility with the engine’s tolerances. For 2015 Malibu models, using a Dexos1 Gen 2–qualified oil helps protect engine life, maintain performance, and support warranty requirements. If you’re unsure, consult the dealership service department or a trusted mechanic to confirm the exact specification for your vehicle’s VIN.
Summary
To recap: use Dexos1 Gen 2 synthetic oil—0W-20 for the 2.5L engine and 5W-30 for the 2.0L turbo. Always verify specifications with the owner’s manual or a Chevrolet dealer, and ensure the oil you purchase carries the Dexos1 Gen 2 certification.