Quote:
Originally Posted by Mrc@ptuning
That's the reason the coolant system is pressurized. The best coolant is pure water. The antifreeze is added on to keep the water from freezing and potentially cracking the block in cold weather. Plus the additive is there to lubricate the water pump. If you track the car often and live in a warm climate, the best "coolant" is pure distilled water and some water wetter.
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Distilled water + water wetter here.
Might put some anti-freeze in for the so-called winter here though, just in case.