Thread: Cooling system
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Old 03-21-2013, 06:38 PM   #2
Brooksie
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If you have an turbo intercooler (aftercooler) it is usually first to get the seawater (and the coldest water "sees" the hottest air).

Beyond that, I have seen engine oil, transmission oil, and coolant exchangers installed interchangably on different engines for convenience of plumbing. That's not to say you should interchange yours because they could be designed (sized) to follow one another in a specific order as the seawater gets warmer. Again, even reversing the flow of one fluid through an exchanger slightly changes the amount of heat absorbed.
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