• SAE 15W-40 diesel oil.
• Meets and exceeds API CK-4.
• Meets Ford spec WSS-M2C171-F1.
• Resists corrosive and abrasive wear.
• Protects against oil aeration and foaming.
• Low ash formula.
• Improved oil consumption control.
• Excellent cold cranking startability and low weather pumpability.

Synthetic diesel oil 15w40 meets and exceeds API CK-4.

Today’s equipment is working harder under harsher conditions to produce the same output it always has. We can help. Schaeffer’s SynShield Durability Advantage 15w40 CK-4 Oil lets you take on mud, dust, corrosion and temperature extremes in the harshest conditions and most extreme environments.

Blended with advanced anti-wear additives and anti-oxidants, SynShield Durability Advantage 15w40 Oil provides the severe duty protection your engine needs for longer service life. Our synthetic oils create a highly durable film that protects metal surfaces against friction, wear and heat. Schaeffer’s 15w40 diesel oil keeps engines running efficiently