Castrol® Duratec™ NG 15W-40

The on-road natural-gas engine oil that extends drain intervals up to 600 hours.

Castrol® Duratec™ NG 15W-40 is formulated for use in natural-gas-fueled engines where minimal thermal degradation and good deposit control is expected. Castrol Duratec NG 15W-40 provides outstanding resistance to nitration and oxidation and meets the performance requirements of many of today’s mobile natural-gas-fueled engines. Castrol Duratec NG 15W-40 provides improved cold-temperature engine starts.

Castrol Duratec NG engine oil SAE 15W-40 is designed for use in a wide range of natural-gas equipment, including Cummins, Mack, Volvo, Detroit Diesel, Navistar and other on-road engines requiring a low-ash natural-gas engine oil.

Product Benefits:

  • Specially designed for on-road trucks
  • Excellent thermal and oxidative stability
  • Outstanding resistance to acid corrosion
  • Exceptional anti-wear protection
  • Reduces deposits and maintains engine cleanliness