Mag 1 1-Qt. 15W40 Diesel Oil. This high-detergent oil with superior dispersancy helps keep engines clean, preventing viscosity increase, deposit formation, and wear. It offers exceptional resistance to thermal degradation and prevents soot suspension in the oil even with extended drain intervals and increased soot loading. The superior anti-wear agents extend engine life despite high operating temperatures and extended service intervals. This oil provides added protection against acid build-up and ensures highly reliable performance over a wide range of temperatures, including severe cold.

• High-detergent oil with superior dispersancy that helps keep engines clean and prevents viscosity increase, deposit formation, and wear.
• Offers exceptional resistance to thermal degradation and prevents soot suspension in the oil even with extended drain intervals and increased soot loading.
• The superior anti-wear agents in this diesel oil extend engine life despite high operating temperatures and extended service intervals.
• This 1-Qt oil provides added protection against acid build-up and ensures highly reliable performance over a wide range of temperatures, including severe cold.