AC Delco 15W-40 CK-4 Motor Oil, Quart, LB7 LLY LBZ LMM LML L5P Duramax
Use the correct fluid for your diesel truck with this premium service fluid engineered for demanding operating conditions from AC Delco.
Key Features
- Formulated for diesel performance, protection, and service life
- Helps resist heat-related breakdown and maintain stable viscosity
- Supports lubrication, wear control, and dependable operation
- Ideal for routine maintenance, towing, and work-truck use
- Confirm the correct specification for your application before use
Benefits
Using the proper oil or fluid helps protect internal components, maintain performance, and support the service intervals recommended for your drivetrain.
Fitment
Compatible with Chevy/GMC Duramax trucks LB7, LLY, LBZ, LMM, LML, L5P.
What's Included
- Fluid or oil in the listed container size
- Manufacturer packaging
