[Healeys] Antifreeze

Bob Spidell bspidell at comcast.net
Wed Jun 12 07:31:37 MDT 2013


aka litmus paper:

http://compare.ebay.com/like/220816819830?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar


On 6/12/2013 5:59 AM, Steve Gerow wrote:
> I recently had my radiator overhauled due to increased running temperatures
> due to rust clogging after a couple of years of running purified water and
> water-wetter.
>
>   
>
> Never had a problem the previous 8 years running Prestone and water. Tech
> support at Royal Purple told me most tap water or filtered drinking water is
> less corrosive than distilled or purified drinking water and that 20%
> coolant is sufficient for where I live in SoCal.
>
>   
>
> Evidently the important thing is to not allow your coolant pH to get below
> 8.3. 9.5 - 10.0 is better.
>
>   
>
> Amazon sells pH testing paper:
>
> http://tinyurl.com/nzlg2pn
>


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Bob Spidell           San Jose, CA            bspidell at comcast.net

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