By providing circulating hot water at up to 200°F with heater output up to 275°F, Hydra Wagon (HW) 2016 prevents liquids from gelling or freezing and becoming stuck in heat steam coiled rail tank cars in cold temperatures. System is available on skid and in open or closed trailer. Weighing ~8,500 lb when loaded for operation, trailer-mounted system burns 6–7 gal of diesel per hour at high fire. Features include 600 gal reservoir and direct drive pump. Operator certificate is not required.