Prime Guard ROTLT4154025 Shell Rotella T4 Triple Protection 15W-40 Diesel Engine Oil 2.5 Gallon

The Shell Rotella T4 Triple Protection 15W-40 is a heavy-duty conventional diesel engine oil engineered to deliver reliable protection across a wide range of demanding applications. Available in a convenient 2.5-gallon jug (Shell part number 550045127), this oil is purpose-built for hard-working diesel engines in both modern low-emission platforms and older legacy equipment.

Shell Rotella T4 Triple Protection technology guards against three critical failure modes: wear, deposits, and oil breakdown. In API industry wear tests, this oil delivered an average of 50% more wear protection than the CK-4 specification requires — significantly exceeding the minimum standard.

Key Features:

• Triple Protection Formula: Simultaneously combats engine wear, harmful deposits, and oil oxidation breakdown
• Advanced Additive Technology: Formulated with high-purity Group II base oils and low-SAPS chemistry for protection under the most severe engine conditions
• Deposit Control: Keeps engines cleaner over the full oil drain interval for optimum performance and long engine life
• Emissions System Compatibility: Exclusive low-ash formulation helps protect exhaust catalysts and diesel particulate filters (DPFs) on late-model low-emission vehicles
• Shear Stability: Enhanced resistance to viscosity loss due to shear, maintaining optimal oil pressure throughout the drain interval
• Oxidation Resistance: Resists oxidation up to 50% longer than previous-generation Shell Rotella T Triple Protection
• API/OEM Approvals: Meets API CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4, and SN specifications; approved by Caterpillar (ECF-2, ECF-3), Cummins (CES 20086, 20081), Detroit (DFS 93K222, 93K218), Mack (EOS-4.5, EO-O Premium Plus), MAN (M 3575), and Deutz (DOC III-10 LA)

This 15W-40 viscosity grade is well-suited for on-highway fleets, general haul, agricultural, construction, mining, logging, and diesel pickup truck applications — including high-power vehicles that demand resistance to elevated heat and mechanical stress. The 2.5-gallon format is ideal for smaller fleets, farm equipment, and shop use.