Shell ROTELLA has unveiled two premium oil blends that meet the new API CK-4 service category for diesel engine oil. T4 Triple Protection 15W-40 delivers an average of 50 percent more wear protection than is required. It defends against deposits and reduces the rate of lubricant-related DPF blockage. T5 10W-30 synthetic blend improves fuel economy and low temperature flow. It also protects against oil breakdown and sustains emission control system durability. Both oils meet numerous specifications set by leading automobile manufacturers and help protect your vehicle from heat and stress. For more information, visit www.rotella.com.