AcDelco 88865910 15W-40 CK-4 Motor Oil is engineered for Duramax engines (2001-2019), offering superior protection and performance. This advanced motor oil meets or exceeds emission standards, reducing engine wear, piston deposits, and oil consumption. Enjoy smoother operation, improved fuel economy, and enhanced performance. Upgrade your engine's care with AcDelco's trusted quality.

• Meets or exceeds emission standards
• Reduces engine wear and piston deposits
• Improves fuel economy
• Ensures smoother engine operation