I have always heard that they make great coolers, but! There is always a but. I have heard some question if they will flow enough to be an effective cooler. Now that being said, hook a water hose up to it and see how long it takes to fill a 5 gal bucket to test its flow rate. Then ask the different after market manufacturers what the flow rate is on there products. Or if you have an old trans cooler laying around try it.