Driven by the specific demands of the new API FA-4 category and the quest for greater fuel efficiency and lower emissions, we have created DURON Advanced, our durable low viscosity, high performing synthetic blend, heavy duty diesel engine oil for the emerging and future fuel-efficient engines.
API FA-4 category oils:
- Will not be interchangeable with older oils, and
- Will have limited backwards compatibility with older engines
Consult your OEM to determine suitability with your engine.
- Advanced Economy: Offers improvement in fuel economy, enabling you to reduce fuel costs and save money.
- Advanced Durability: Outstanding resistance to oxidation, aeration and excellent shear stability.
- Advanced Protection: Provides long term protection against engine wear and the build-up of engine deposits and harmful sludge which helps extend drain intervals. 
- Advanced Shear Stability: Robust shear stability helps keep the oil to stay in grade over long periods of heavy duty use, giving you the film strength for better engine protection.