THE CLASSIC STRENGTH: PHILLIPS 66® T5X®

Single-Grade Precision. High-Load Resilience.

Mammoth is proud to supply Phillips 66® T5X, a high-quality monograde diesel engine oil designed for use in engines where the manufacturer specifies a single-grade lubricant. Engineered to provide elite protection for both turbocharged and naturally aspirated engines, T5X is the trusted choice for heavy-duty construction equipment, marine applications, and legacy diesel engines requiring a stable, high-viscosity-index oil.

WHY MAMMOTH TRUSTS T5X:

• Superior Shear Stability: As a monograde oil, it provides exceptional resistance to viscosity breakdown, maintaining a consistent lubricating film under constant, high-pressure loads.

• Oxidation & Deposit Control: Advanced detergent-dispersant chemistry minimizes the formation of sludge and varnish, keeping internal engine components factory-clean.

• Corrosion Protection: Formulated to protect against rust and bearing corrosion, ensuring the longevity of critical engine parts even during periods of intermittent use.

• Broad Application Range: Available in specific weights (10W, 30, 40, 50) to meet the precise requirements of transmissions, hydraulic systems, and older two-stroke diesel engines.