Shell Lubricants’ Shell Rotella T6 10W-30 is a full synthetic heavy-duty engine oil. A full synthetic 10W-30 provides the benefits of a full synthetic engine oil in the fastest growing viscosity grade for diesel-powered vehicles. The versatile oil offers fuel economy benefits and excellent engine protection for hard working trucks. Shell Rotella T6 10W-30’s unique formulation is designed to provide better wear performance compared to conventional and synthetic blend Shell Rotella 15W-40 and 10W-30 products while also delivering improved fuel economy capability of 2% compared to SAE 15W-40 heavy-duty engine oils. This can save money in fuel consumption, without compromising engine protection or durability. The oil also helps ensure enhanced engine protection and can help to reduce maintenance costs.