Quote:
Originally Posted by Fundahl
Nope.
Any hot fluid can use a heat exchanger to exchange heat.
Your radiator, intercooler and oil cooler all do the same thing, just for different type of fluids.
In this vehicle all these happen to be air-to-air, so yes, you need air flowing through the core of the heat exchanger, that is lower temperature than the core itself, for it to do any work at all.
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Water (coolant) cools engine that cools the oil also, oil returns to oil cooler that is cooled by the air
It doesnt matter how it is explained this is the process. This is the reason why BMW added the additional radiator to the 335iS model which is also offered as a Perfomance Package instead of offering a bigger oil cooler.