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yup.
if you want your engine to run cooler w/ out doing anything major just run a higher percentage of water in the coolant mix. before it gets cold enough to freeze outside you could run 100% water as long as you don't use the a/c. but if you run the a/c keep it around 80-90%water, 10-20% anti-freeze.
water has better heat transfer capabilities than an anit-freeze/water mix.
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