For years, uhm, maybe decades, on the various touchless/winter washing topics, I have always wondered what special sauce Accum. was using as he has always said HP rinses pretty well with the winter muck he has in his area......where IME, high ph presoak, every presoak method/option tried for a HP rinse, it never rinsed as clean as I would have preferred prior to a mechanical wash.
Granted we`re living in a new era where driving is less, but I have definitely driven enough to accumulate quite some winter grime on it. Anyhow, I don`t know if the city is using a different type of salt and maybe this is the answer, but for the last 2 times I have done a presoak-swell and HP salt rinse this year, the panels are rinsing considerably cleaner than of every year prior to this.
Calcium, Rock, Magnesium, Potassium, etc. <_<
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