Lionel 16153 AEC Reactor Fluid 6315-1 Tank Car O Gauge Lionel 16153 AEC Reactor Fluid Tank Car 6315-1 . It includes really neat thick blue liquid you can see in the clear tank. This car features die-cast metal sprung trucks, die-cast metal operating knuckle couplers, and metal wheels and axles. 1997 Like New Original Box