Shell Rotella T4 Triple Protection 10W-30 diesel engine oil provides exceptional wear protection for prolonged engine life in a wide range of heavy-duty engines. Compared to a 15W-40, its lower viscosity allows for less resistance in the engine for improved fuel economy without sacrificing wear protection. Using advanced additive technology, Shell Rotella T4 10W-30 provides enhanced deposit protection and exceptional engine cleanliness over the oil drain interval. Plus, it provides an advanced low-ash formulation to help maintain emissions system compatibility and outstanding shear stability for viscosity control. Suitable for both the latest low-emissions and older model equipment, it's also suitable for use in agricultural, mining, logging, and construction applications as well as diesel pick-up trucks and motorcycles.For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner's manual