Phillips 66® T5X Heavy Duty Diesel Engine Oil is a high-quality diesel engine oil designed for use in a wide variety of applications, including off-highway diesel equipment, farm machinery, marine engines, 2-stroke cycle diesel engines (SAE 40 only) and mixed commercial fleets. It also may be used in some heavy-duty manual transmissions in trucks and buses.
• Excellent soot control for protection against abrasive wear and soot-induced oil thickening
• Protects against sludge and varnish formation
• Protects against scuffing and wear
• Protects against rust and bearing corrosion
• Good resistance to foaming and aeration
• Low-ash content to minimize ash deposits and help keep intake ports clean (SAE 40)
• 2-stroke cycle diesel engines in bus fleets and marine fleets (SAE 40)
• Off-highway trucks, heavy equipment and farm equipment
• Light trucks and farm equipment with gasoline engines (SAE 30, SAE 50)
• Heavy-duty manual transmissions in trucks and buses where the OEM specifies engine oil
T5X Heavy Duty meets or exceeds the requirements of:
• API Service CF-2(1), CF(1) (SAE 40)
• API Service CF(1), SL (SAE 30, SAE 50)
• Detroit Diesel 2-stroke cycle engines, Oil Type 1 (1.0% max. sulfated ash (SAE 40))
| SAE Grade | 30 |
| Specific Gravity @ 60°F | 0.883 |
| Density, lbs/gal @ 60°F | 7.35 |
| Color, ASTM D1500 | 4 |
| Flash Point (COC), °C (°F) | 230 (446) |
| Pour Point, °C (°F) | -33 (-27) |
| Viscosity, Kinematic | |
| cSt @ 40°C | 92 |
| cSt @ 100°C | 11.3 |
| Viscosity Index | 110 |
| High-Temp/High-Shear Viscosity, cP @ 150°C | 3.4 |
| Sulfated Ash, ASTM D874, wt % | 1.39 |
| Total Base Number (TBN), ASTM D2896 | 10.5 |
| Zinc, wt % | 0.119 |
T5X Heavy Duty meets or exceeds the requirements of:
• API Service CF-2(1), CF(1) (SAE 40)
• API Service CF(1), SL (SAE 30, SAE 50)
• Detroit Diesel 2-stroke cycle engines, Oil Type 1 (1.0% max. sulfated ash (SAE 40))
| SAE Grade | 40 |
| Specific Gravity @ 60°F | 0.886 |
| Density, lbs/gal @ 60°F | 7.38 |
| Color, ASTM D1500 | 4 |
| Flash Point (COC), °C (°F) | 235 (455) |
| Pour Point, °C (°F) | -27 (-17) |
| Viscosity, Kinematic | |
| cSt @ 40°C | 142 |
| cSt @ 100°C | 15 |
| Viscosity Index | 106 |
| High-Temp/High-Shear Viscosity, cP @ 150°C | 4.2 |
| Sulfated Ash, ASTM D874, wt % | 0.9 |
| Total Base Number (TBN), ASTM D2896 | 6.8 |
| Zinc, wt % | 0.077 |
T5X Heavy Duty meets or exceeds the requirements of:
• API Service CF-2(1), CF(1) (SAE 40)
• API Service CF(1), SL (SAE 30, SAE 50)
• Detroit Diesel 2-stroke cycle engines, Oil Type 1 (1.0% max. sulfated ash (SAE 40))
| SAE Grade | 50 |
| Specific Gravity @ 60°F | 0.891 |
| Density, lbs/gal @ 60°F | 7.42 |
| Color, ASTM D1500 | 4 |
| Flash Point (COC), °C (°F) | 240 (464) |
| Pour Point, °C (°F) | -27 (-17) |
| Viscosity, Kinematic | |
| cSt @ 40°C | 224 |
| cSt @ 100°C | 20 |
| Viscosity Index | 103 |
| High-Temp/High-Shear Viscosity, cP @ 150°C | 5.7 |
| Sulfated Ash, ASTM D874, wt % | 1.39 |
| Total Base Number (TBN), ASTM D2896 | 10.5 |
| Zinc, wt % | 0.119 |
