Shell ROTELLA 550019907-3PK T5 10W40 Synthetic Blend Heavy Duty Engine Diesel Oil - 1 Gallon, Pack of 3 Synthetic blend motor oil Motor oil weight: SAE 10W-40 Increased fuel economy and low-temperature flow Enhanced engine cleanliness and wear protection Exceptional piston cleanliness and sludge control Synthetic blend motor oil Motor oil weight: SAE 10W-40 Increased fuel economy and low-temperature flow Enhanced engine cleanliness and wear protection Exceptional piston cleanliness and sludge control T5 Synthetic Blend Heavy Duty has a emission system compatibility; Advanced low-ash formulation helps control the blocking or poisoning of exhaust after-treatment devices, helping maintain vehicle emissions compliance and engine fuel efficiency