Good info there Jim. I have had mine removed over the summer months too, though I didn't get around to testing back to back. Took it off when the sump was swapped and it never made it back on. On at hot day (33) and a 4 km long rally stage my temps were 130 engine oil and around 105 water at then end of the run. A bit too high for comfort. Am fitting a 110 lpm Davies Craig ewp to replace existing 85 lph ewp. Though I think a better radiator is really required. Have oil cooler already.