AMERIGUARD® Synthetic Blend 15W-40 CK-4 Heavy Duty Diesel Engine Oil uses the latest technology that provides extra protection, compared to Conventional Oil. It’s formulated with a combination of full synthetic and high-quality Group II base oils. You and your vehicles work hard for the important things in life. Trust high-quality AMERIGUARD® Lubricants by Sapp Bros. to protect engines and your investment -- at an excellent value. Our engine oil is formulated to provide the following features and benefits:

• Improved cold temperature performance and extra protection, compared to Conventional 15W-40 CK-4 grade.
• Extended drain capability.
• Extra wear protection. Our technology delivers up to 53% better wear protection.1
• Better oxidation and deposit control. Stands up to high heat and stress to protect as well on the last day as it does on the first day. Up to 83% better oxidation control and 63% better deposit control.2
• Meets or exceeds the requirements of OEMs.

Applications

• This product and grade is a fuel economy and mixed fleet 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.