I got a 12 as well and tracked it about 7 times from nov-march without an oil cooler. Even when pushing hard up to 80deg out, oil temp never went over 250's. I installed a 34 row from Z1 motorsports, now on a hot day at the track around 90's, engine oil temp will still reach 250s due to heat. On highway driving, oil never gets past 150ish unless traffic.
You do not need another oil cooler unless you are tracking. Driving the car hard, canyon driving etc, should not get your oil past 250's. Just remember after 2-3 track days hitting 250's, the oil is very dirty and will need to be changed OFTEN. So even if you stick with the stock cooler and u do hard runs, change your oil often.
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