Shell ROTELLA T5 15W-40 Premium Synthetic Blend with Triple Protection Plus technology delivers all the benefits you've come to expect from Shell ROTELLA, and then some. Triple Protection Plus is the unique combination of Triple Protection -advanced additive technology and synthetic base oils. Triple Protection Plus means protection against wear, deposits, and oil breakdown plus better low temperature flow which delivers excellent equipment protection, long engine life and maintains viscosity control under high temperatures. It delivers: Excellent wear protection Exceptional deposit control/cleanliness Excellent protection against oil breakdown Sustained emission control system durability in particulate filters and after-treatment systems Suitable for a wide range of heavy-duty engine applications