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The Madness designed Oil Cooler Kit reduces oil temperatures between 30 - 40 degrees Fareinheight by circulating hot oil though a high-efficiency external cooler. This means reducing oil temperatures from 225 to 185 degrees Fareinheight . The stock oil cooler cools the engine oil via a small heat exchanger (pictured in blue) that circulates hot antifreeze, reaching 225F and higher during racing use, hot climates and heavy traffic. By adding the Madness MINI Cooper S Oil Cooler Kit, the life and quality of the oil are improved. Miles of life are added to high-wear engine components such as piston rings, piston skirts, cam bearings, and rod bearings. Another benefit from the Madness MINI Cooper S Oil Cooler Kit is the reduction in overall engine temperatures. This occurs because the engines antifreeze is not used to cool the oil like in the stock unit.