Sounds like the 2012 oil cooler works pretty good. 1st day I had my Z, sitting in traffic on a 90 degree day and it went straight to 260. During the winter it's been sitting between 200 and 220. Mellew (2nd gear, 3000-4500 RPM) drive up a mountain road on a 60 degree rainy day brought it back up to 260. Working on my own take on an oil cooler that does not leave 1 qt of dirty oil in the engine every oil change. I really hope it works... LOL
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