Shell Rotella T6 10W-30 diesel engine oil is a full synthetic motor oil that features exclusive Triple Protection Plus technology, formulated with fully synthetic base oils plus advanced additives to protect against wear, deposits, and oil breakdown. Delivering enhanced fuel economy capability of up to 2%*, Shell Rotella T6 10W-30 can help you save money in fuel consumption without compromising engine protection or durability. This 10W-30 full synthetic diesel engine oil also exceeds CK-4 deposit requirements by 33%** for excellent engine cleanliness, and performs 50%*** better than the industry standard in preventing oil breakdown. It also provides increased protection against oxidation, extreme temperature protection for more uptime in extreme conditions, improved cold start performance, biodiesel compatibility, and extended drain capability for more uptime and reduced maintenance costs. Suitable for virtually all modern low-emission heavy duty engines and older hard working diesel engines, Shell Rotella T6 10W-30 Full Synthetic motor oil is an excellent choice for on-highway fleets, general haul, construction, agriculture, public-transport operators, and diesel pick-up trucks. * Compared to conventional 15W-40 diesel engine oil; ** Caterpillar 1N API CK-4 limits; *** VDS 4.5 limit