I'm going to fit an oil cooler as a minimum for track work. I am seeing increased coolant temperatures when working the car harder on hot days. My assumption is that a lot of this is following high oil temperatures (no, I don't have an oil temp gauge... I know I know).

I'm just wondering how much this will work towards reducing coolant temperatures on it's own or if I should upgrade the radiator at the same time.


There appears to be a pick of Alloy Rads @ £150 to £175 then a jump to £250 for Mishimoto. Any recommendations?