A premium heavy duty diesel engine oil formulated with a focus on better durability and engine protection.

Formulated to API CJ-4 category standards, DURON EXTRA helps you get the most out of every engine, stay productive, reduce costs and improve your reliability, no matter how tough the operating conditions.

• Durability: Formulated with strong resistance to oxidation and designed with high shear stability to help extend drain intervals^[1] and productivity
• Tough in all Temperatures: Formulated to resist the high temperatures of sustained heavy duty use, and to provide critical protection in all types of weather
• Enhanced Protection: Provides long term protection against engine wear and the build-up of engine deposits and harmful sludge even under extreme conditions.