Quote:
Originally Posted by fastpakr
I'd assume the mechanic has and always uses distilled water, but it's certainly wise to ask. Re the concentration, it says on the bottle but I don't remember if it recommends traditional 50/50 mixing or not.
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I just purchased 3 Gals. of Zerex GO-5 and left my car with my mechanic, I'm pretty certain that it was a 50/50 mixture already.