Does 2 jugs of antifreeze and 2 jugs of distilled water sound about right?
Any recommendations on which brand?
Thoughts on DexCool? Anybody using it?
I was thinking of Zerex G-05.
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Dex-cool has a boiling point of 108.9 C 288 F. The reason I mention it is if you go racing the cylinder heads get vary close to that temperature and water based coolants have a tendency to cause micro-bubbles. Over time in a race this means less cooling in the heads, long races would show more of a problem than short. If you see small bubbles in the over flow you know you have a problem.
You may want to use waterless coolants as the have higher boiling point (Evens is 191 C 375 F) less tendency to micro-bubble. There may be others with higher boiling point that I may not know of.