Featuring MAG 1® with FMX® Technology – Friction Management for Xtreme protection™. Delivers unsurpassed protection when thicker oil is preferred or recommended by the OEM. Our Synthetic Blend provides extra protection.

MAG 1 Synthetic Blend 15W-40 CK-4 is technologically advanced heavy duty diesel engine oil that provides extra protection and performance, compared to Conventional Engine Oil, including the following benefits:

• Excellent extended drain capability.
• Approved by or meets requirements of major OEMs such as Cummins, Detroit Diesel, Mack/Volvo, Paccar, Navistar, Caterpillar and others.

Engineering and Innovation for Extra Protection 

MAG 1® with FMX® Technology provides unsurpassed protection and performance. FMX Technology creates a strong, durable and high-performing level of protection that controls friction and reduces metal-to-metal contact in modern and older engine design. 

Our advanced oil technology actually improves oil properties over time, retaining viscosity, friction and anti-wear benefits, even in today’s hotter engines. This is exactly the kind of protection called for in engines that deliver greater horsepower and better fuel economy.    

Synthetic Blend Heavy Duty Diesel Engine Oil featuring FMX® Technology and Evolutionary Performance™

The latest MAG 1® Heavy Duty Diesel Engine Oils are specially engineered and formulated to provide:

Applications

• This product and grade is diesel engine oil recommended for naturally aspirated and turbocharged four-stroke diesel engines in which the API CK-4 service categories are recommended. It is formulated for engines operating under severe service and a wide range of cold and hot temperatures.
• It is backward compatible for CJ-4 and older API service categories.
• Approved by or meets requirements of major OEMs such as Cummins, Detroit Diesel, Mack/Volvo, Paccar, Navistar, Caterpillar, and others.