Shell ROTELLA T5 is formulated and designed to energize the oil's performance and provides fuel economy benefits*, improved low-temperature flow, and delivers an advanced "Low-SAPS" formulation which helps control the blocking or poisoning of exhaust after-treatment devices. Shell ROTELLA T5 Synthetic Blend Technology is an innovative heavy duty engine oil designed to deliver fuel-economy savings, extended-drain capability, enhanced engine cleanliness, and excellent wear protection. Shell Lubricants is one of the first companies to offer synthetic blend SAE 10W-30 and SAE 10W-40 viscosity grade products that meet some of the most stringent heavy duty engine oil specifications globally, such as API CJ-4, ACEA E9, and Volvo VDS-4. Shell Lubricants is committed to being the technical leader in heavy duty engine-oil-product innovation. Shell Lubricants continues to be a leader in the development of fuel-economy-lubricants. In 2009, we conducted a large-scale trial of medium-duty trucks based on city and highway driving patterns. Shell ROTELLA T5 demonstrated fuel-economy savings of up to 1.6% in 2009 on-the-road field testing in medium-duty trucks. (For 10W-30 viscosity-grade-only, highway cycles, compared to Shell ROTELLA Triple Protection 15W-40.) These fuel-economy savings can help lower operation-and-maintenance costs.