Royal Purple Duralec Super Diesel Engine Oil 15W-40 CK-4 (3 Gallons)

Royal Purple Duralec Super Diesel Engine Oil 15W-40 CK-4 (3 Gallons) offers enhanced wear protection and superior corrosion resistance to extend engine life. Its advanced formula improves fuel economy while reducing exhaust emissions, supporting cleaner operation. This API-licensed CK-4 oil maintains engine cleanliness and is compatible with seals, preventing leaks and damage. Ideal for heavy-duty diesel engines, it delivers reliable performance under demanding conditions.

• Greater wear protection
• Improves fuel economy
• Superior corrosion protection
• Reduces exhaust emissions
• Keeps engines clean
• API-licensed CK-4 diesel motor oils
• Will not harm seals