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Shell Rotella T6 15W-40 Full Synthetic Heavy Duty Diesel Engine Oil is designed and formulated to provide improved performance compared to conventional and semi-synthetic Rotella 15W-40 products. It is suitable for virtually all modern low-emission heavy duty engines* and older hard-working diesel engines. With its wide range of specifications and approvals from many of the world’s leading engine makers it is an excellent choice for on-highway fleets general haul construction agriculture public-transport operators and diesel pick-up trucks. Shell Rotella T6 15W-40 provides better cold cranking properties and low temperature pumpability at -15C compared to conventional and synthetic blend Shell Rotella 15W-40 products. That means it reaches critical engine parts faster in colder temperatures to minimize wear and make hard work easier in cold climates. In API industry wear tests Shell Rotella* T6 15W-40 didn’t just meet CK-4 specs it demonstrated an 85% improvement in copper corrosion protection and 98% improvement in lead corrosion protection than required an average of 50% more wear protection than required. Lower volatility in conjunction with detergents and dispersant used in Shell Rotella T6 15W-40 help provide excellent oil consumption control. Keep your engine in top-performance condition with Shell Rotella T6 15W-40 Full Synthetic Heavy Duty Diesel Engine Oil.