GUARDOL TT® DIESEL ENGINE OIL
HEAVY DUTY DIESEL ENGINE OIL
Phillips 66® Guardol TT Diesel Engine Oil, a high-quality API CK-4 engine oil, is designed for 4-stroke cycle diesel engines compliant with 2007 and later EPA on-highway exhaust emission standards. This specially formulated oil safeguards exhaust aftertreatment devices like diesel particulate filters and diesel oxidation catalysts. It's also backward serviceable, making it suitable for older diesel equipment with conventional, non-EGR engines.

Links of Interest
Features & Benefits
- Specially formulated to protect exhaust aftertreatment systems
- Protects against rust, bearing corrosion and wear
Applications
- On-highway diesel trucks equipped with EGR and exhaust aftertreatment devices
- Older on-highway and off-road diesel equipment with conventional, non-EGR engines
Technical Details
Licenses & Approvals:
Truck Tested Diesel Engine Oil meets or exceeds the requirements of:- API Service CK-4, CJ-4, CI-4 PLUS, SN
Additional Details:
SAE Grade | 15W-40 |
Specific Gravity @ 60°F | 0.0875 |
Density, lbs/gal @ 60°F | 7.30 |
Color, ASTM D1500 | 3.9 |
Flash Point (COC), °C (°F) | 208 (406) |
Pour Point, °C (°F) | -38 (-36) |
Viscosity, Kinematic | |
cSt @ 40°C | 113 |
cSt @ 100°C | 14.7 |
Viscosity Index | 134 |
Cold Cranking Viscosity, cP @ (°C) | 5000 (-20) |
High-Temp/High-Shear Viscosity, cP @ 150°C | 4.1 |
Sulfated Ash, ASTM D874, wt % | 0.82 |
Total Base Number (TBN), ASTM D2896 | 8.5 |
Zinc, wt % | 0.1075 |