Reliant FS engine oils have been specifically formulated to meet today’s heavy-duty diesel OEM (Original Equipment Manufacturer) requirements and stringent API Commercial Category CK-4 specifications. Blended with state-of-the-art, technologically advanced additives and superior quality synthetic base oils, Reliant FS engine oils surpass the higher performance demands of model year 2017 and newer heavy-duty diesel engine hardware. The API Commercial Category CK-4 offers backwards compatibility for older diesel engines requiring older, obsolete Commercial classifications including CJ-4, CI-4 Plus, CI-4 and CH-4. D-A Reliant FS engine oils promote robust engine cleanliness and protects against deposit formation.

• Reliant Full Synthetic engine oils promote robust engine cleanliness and protects against deposit formation. They also guard against viscosity increase by affording superior thermal / oxidation stability under extreme temperature ‘severe service’ (duty) operation. and effectively minimize harmful oxidative conditions
• Maintains film strength and shear stability throughout intended service, equating to longer, more pronounced service drain intervals.
• Provides outstanding pumpability / flowability in extreme cold ambient environments.
• Affords significant alkalinity or higher Total Base Number to maximize acid neutralization and prevent harmful component corrosion.
• Size - 6 Gallon Bag-in-a-Box