The Bulk Castrol Heavy Duty Duratec ES Synthetic 15W40 NGEO is a full synthetic 15W40 Natural Gas Engine Oil from Castrol. Formulated for industrial engines applications. Delivers clean burn protection. Meets Low Ash NGEO specifications.

• Brand: Castrol
• Product Type: Natural Gas Engine Oil
• Product Family: Engine Oil
• Base Formulation: Full Synthetic
• Viscosity Grade: 15W40
• Base Oil Type: Full Synthetic
• Additive System: Duratec ES Additive System
• Compatibility: Natural Gas Engines
• OEM Specifications: Low Ash NGEO
• Performance Standards: NGEO
• Industry Application: Industrial Engines
• Equipment Compatibility: Engines
• System Application: Clean Burn Protection
• Protection Degree: Extended
• Package Size: Bulk

• Class 6–8 heavy duty diesel trucks
• Commercial fleet diesel engines
• Construction and agricultural diesel equipment
• Turbocharged and intercooled diesel engines
• Stationary diesel generator engines

Natural Gas Engines Compatible equipment: Engines. Meets Low Ash NGEO.

Meets performance standards: NGEO. Store in a cool, dry location. Keep out of reach of children and dispose of used lubricant in accordance with local environmental regulations.