Extreme Racing Oil XD15W-40G Heavy Duty Diesel Engine Oil CK-4 1 Gallon

Extreme Racing Oil XD15W-40G is a premium heavy-duty diesel engine oil formulated to meet the demanding requirements of modern diesel engines. This high-performance 15W-40 viscosity oil is certified to API CK-4 specifications, providing superior protection for both on-highway and off-highway diesel applications.

Key Features:

• API CK-4 certified formulation for the latest diesel engine technology
• 15W-40 multi-grade viscosity for excellent cold-start protection and high-temperature performance
• Advanced additive package protects against wear, deposits, and oil oxidation
• Compatible with diesel particulate filters (DPF) and exhaust gas recirculation (EGR) systems
• Suitable for turbocharged and naturally aspirated diesel engines
• Provides extended drain intervals under severe service conditions

This 1-gallon container is ideal for fleet maintenance, agricultural equipment, construction machinery, and commercial diesel vehicles. The CK-4 specification ensures backward compatibility with older API service categories including CJ-4, CI-4 PLUS, and CI-4.