Mastermax 15W40 API CI4 is formulated using advanced technology base oils and state-of-the-art additive systems to deliver unmatched engine protection. Designed for severe on- and off-highway applications, it provides excellent control of deposits, wear, and oil thickening caused by soot. Its high oxidation stability maintains oil integrity under extreme operating conditions, while superior shear stability ensures lasting viscosity control. Suitable for engines using both low- and high-sulfur fuels, this oil offers wide compatibility across fleets. The formulation delivers exceptional piston cleanliness, reduced valve train wear, and enhanced protection for emission control systems. Meeting stringent API CI4 standards, Mastermax 15W40 is engineered to optimize performance, reliability, and longevity for diesel engines under heavy workloads and demanding environments.
15W40 API CI4 is a high-performance diesel engine oil delivering extended engine life and exceptional protection in both modern high-output engines and older models across severe duty applications.
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Emerald Business Park, Kutch Road Nairobi - Kenya
Office : +254 794 205 115
Director : +254 757 297 662
