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An oil cooler extends the life of an engine by specifically keeping the oil 'cooler' that what the regular cooling system can do (which is designed to cool the entire engine). If your car has some SEEPAGE around the cooler and/or lines that is not the end of the world; but if it LEAKS repair it. Since it is external to the engine I would not expect it to be a major repair.

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โˆ™ 2011-10-18 21:11:15
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Q: What is the function of the oil cooler on a 2001 Volkswagen Passat and is it a major repair?
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