Cat® DEO-ULS is a premium engine oil formulated with high-quality, extensively hydroprocessed base stock oils and an optimized additive package to ensure superior performance, durability, and extended engine life. Its enhanced oxidation and thermal stability help minimize engine deposits, maintaining consistent protection throughout the oil drain interval. The formulation also reduces aeration, which improves
resistance to oil breakdown, cavitation, and corrosion. With improved shear properties, the oil maintains consistent viscosity under high loads, ensuring better lubrication and protection for moving components. Additionally, specially designed additives and superior base stocks deliver long-lasting engine protection and support consistent emissions performance.

Recommended Use
• Caterpillar diesel engines except 3600 series engine models
• Ideal for mixed fleets and on-highway heavy duty trucks
• Meets global requirements for engines with aftertreatment devices requiring API CK-4 diesel engine oil
• Exceeds the performance requirements of API CK-4 and is backwards licensable with prior API categories

Always follow the fluid recommendations in your OMM. Contact your dealer for additional information.