I am still having some issues with the oil cooling and subsequent loss of oil pressure at tickover. The addition of the oil cooler + 6W fan has had an effect but not good enough. I have now uprated the fan to that of a 1300 GSR motorbike fan with ~2.5 x the power 15W. It gives a fair old draft so hopefully this will result in an improvement. I want to be able to stay out for more laps at Knockhill.