Akcela Unitek Plus 10W-40 CK-4 is a high-performance, synthetic engine oil specifically formulated for modern diesel engines, including those equipped with exhaust after-treatment systems like DPF, SCR, and EGR. This 20-liter container of genuine Steyr oil meets API CK-4 specifications, ensuring superior protection against wear, soot, and oxidation, even under severe operating conditions. It is designed to extend engine life and maintain efficiency in agricultural and construction machinery requiring a 10W-40 viscosity grade.