Engine Oils
Phillips 66® has everything it takes to provide confidence and protection. We maximized fuel economy and wear protection.
Heavy Duty (13 Products)
- Guardol® NG-D
- Guardol FE® Full Synthetic Diesel Engine Oil
- Guardol Eco™ Diesel Engine Oil
- T5X® Heavy Duty Diesel Engine Oil
- Heavy Duty Diesel Engine Oil
- Super Hd II Diesel Engine Oil
- T5X® Plus Heavy Duty Diesel Engine Oil
- Power-D® Engine Oil
- Guardol Euro™ Full Synthetic Diesel Engine Oil
- Guardol ECT® Synthetic Blend Diesel Engine Oil
- Guardol Fleet EC™ Diesel Engine Oil
- Guardol XT™ Full Synthetic Diesel Engine Oil
- Guardol FE® Synthetic Blend Diesel Engine Oil
