Castrol’s family of premium heavy duty engine oils include two semi-synthetic products that have been designed to offer operational efficiency through extended drain performance and excellent wear protection.
Built on over 10-million miles of real-world testing, Hypuron 15W-40 is an excellent option for both fleets and off-road construction equipment. High TBN retention and excellent shear stability enable Hypuron 15W-40 to perform well throughout an extended drain interval. When using Hypuron 15W-40 with a used oil monitoring program, intervals can be safely extended up to twice those recommended by OEMs.
Hypuron Advanced Formula 10W-30 is an entirely new formula and not simply a viscosity grade variant. It has been designed to deliver “extreme” extended drains of up to 70,000 miles in on-road service and up to 900 hours in refuse and off-road applications. Featuring even better TBN retention, shear stability and oxidation resistance, Hypuron AF 10W-30 takes extended drain performance to a new level, while still offering all of the engine protection expected from one of our high-quality oils. The lighter 10W-30 viscosity grade also offers the potential for improved fuel economy versus a 15W-40 oil.