PX Extreme Diesel 15W40 is a high-performance heavy-duty diesel engine oil designed to meet the demands of modern engines operating under high load and temperature conditions. It is suitable for high-speed 4-stroke diesel engines and supports compatibility with exhaust gas recirculation (EGR) systems and advanced after-treatment technologies such as particulate filters, oxidation catalysts, and selective catalytic reduction systems. This makes it a versatile solution for both on-road and off-road applications, including transport, construction, and agricultural equipment. Formulated to resist oil degradation, PX Extreme Diesel 15W40 helps maintain engine cleanliness, neutralize harmful acids, and preserve viscosity under thermal and mechanical stress. It meets key industry and OEM standards including API CK-4, which is backwards compatible with older specifications such as API CJ-4, CI-4, and CH-4—making it ideal for mixed fleets. It also meets the requirements of Volvo VDS-4.5, Mack EO-S-4.5, and Cummins CES 20086, ensuring reliable protection and performance across a wide range of diesel engines. These approvals support extended maintenance intervals, reduced downtime, and improved operational efficiency.

• Suitable for a wide range of diesel engines, making it ideal for mixed fleets that include both newer and older vehicles.
• Approved by major engine manufacturers, ensuring dependable performance across various types of equipment.
• Helps maintain engine cleanliness by reducing deposit buildup and neutralizing harmful acids.
• Resists viscosity breakdown under high temperatures and mechanical stress, providing consistent protection in demanding conditions.
• Supports extended service intervals, helping reduce maintenance frequency, minimize downtime, and lower operating costs.

ACEA E11 / E9 / E7 | Allison TES-439 | API CK-4 / SN | CAT ECF-2 / 3 | Cummings CES 20086 | Deutz DQC III-10 LA / III-18 LA | Detroit Diesel 93K222 / 93K223 | JASO DH-2 | Mack EO-S-4.5 | MAN M3575 | Mercedes Benz 228.31 | MTU Type 2.1 | Renault RLD-3 | SAE 15W-40 | Volvo VDS-4.5