[KTL]

You won't need another cooler. Get some air to the cooler and you'll be just fine. For an extra margin of safety, connect the oil cooler fan wires to the fog light wires on that side of the car. Then you can manually turn on the fan with the fog light switch whenever you like- as long as you have the headlight switch in one of the "ON" positions. Nice thing about using the fog light wiring for manual control of the oil cooler fan, is the circuit's already protected with a relay!