The supplier was not specified in a Financial Times report.
The cars are valued at a reported $200 million and will have the capacity to move 120,000 barrels of oil a day.
In a Reuters interview last month, Phillips 66 CEO Greg Garland said the refining company seeks to process more shale oil "everywhere we can get it," adding, "We want to increase our exposure in both the West Coast and East Coast for some of those advantages barrels."
The company is actively pursuing rail delivery and storage to handle crude oil products until such time as pipeline alternatives are available.
