Royal Purple’s Duralec Super Diesel Motor Oil is a synthetic engine oil engineered for today’s diesel engines equipped with advanced emissions systems, including diesel particulate filters, diesel oxidation catalyst, exhaust gas recirculation, and selective catalytic reduction.

Features

• Formulated for use with ultra-low sulfur diesel fuels found throughout North America and Europe
• Maximizes component life
• Extends drain intervals
• Enhances fuel performance
• Improves wear protection, fuel economy, corrosion protection, and high-temperature breakdown resistance
• Maintains low-temperature pumpability to help minimize cold-start wear 
• Available in SAE 5W-40, 10W-30, and 15W-40 viscosities
• Meets API CK-4 requirements and numerous OEM performance specifications