The Thermal Transfer DF-11 mobile oil cooler with fan and shroud is a basic truck or trailer mounted fan cooler that can be added to existing tank/reservoir setups that have no fan cooler or included in new hydraulic setups for additional oil cooling. The Mobile DF Series has a robust design that includes steel tanks and damage-resistant steel fins. This series features moderate flows, high heat removal and an optional serviceable internal pressure bypass. The DF incorporates DC fans or long-life hydraulic motors.