Co-op has you covered for every aspect of the latest diesel engine technology, performance specifications and fuel efficiency standards in both on- and off-road heavy-duty diesel engines.
CO-OP® D-MO® (Diesel Motor Oil) Oil is designed for use in all naturally aspirated, high-output and turbo-charged four-stroke diesel motors requiring the American Petroleum Institute (API) CK-4 performance specification.
API CK-4
- Surpasses the previous diesel engine oil performance specification CJ-4
- Fully backwards compatible
- On and off-road engine compatible
- Provides improved engine protection
To meet the API CK-4 performance specifications, D-MO oil has been rigorously tested and has been approved, not only for API performance service classification, but for Original Equipment Manufacturers (OEM) performance standards as well. D-MO has undergone field and lab testing to be licensed and certified for use with several industry-leading OEM diesel engines including CAT, Cummins, Detroit Diesel, Ford and Mack/Volvo.
The latest addition to the D-MO product line is D-MO Synthetic Blend 10W-30. Designed for use within the on-highway market focusing on providing operators with increased fuel economy savings, year-round performance and extended oil life. OEM registered and approved, providing peace of mind, ensuring proper application and accurate recommendation is provided for your heavy-duty diesel engine.
For a complete list of the approved industry/OEM specifications and OEM licensed D-MO products, refer to the Technical Data Sheets within the link below.
D-MO Lineup
These performance features add up to improved wear protection and longer engine life and can extend oil drain intervals, resulting in more kilometres being driven. D-MO CK-4 oil maintains its oil integrity in high-temperature and extreme operating conditions with exceptional thermal and oxidative stability. D-MO CK-4 oil is capable of withstanding the high temperature and stressful situations that occur with heavy load capacity hauling.
Visit your local Co-op to pick up your D-MO diesel motor oil today!
