I had my first track day with the Stillen Track Oil Cooler (My third track day total). To sum it up, oil temperature was not even an issue.
I was at the Summit Point main circuit on Saturday at about 75 degrees with the occasional downpour. Most of my sessions were in heavy rain but the one I had in the dry my oil temps never went above 220 degrees. Keep in mind that I am still a novice and the wet track required careful use of the throttle.
I really love this car more than ever. With the traction control on in the rain it was really was confidence inspiring. On my third session I got a point by from a Porsche GT3 and multiple Aston Martins (there was a Aston Club in attendance).
In fact , the only car I had to point by was a SLR McLaren. Yes...a SLR McLaren...