milkshake in the coolant reservior
03-16-2009, 08:03 AM
#31
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Join Date: Jun 2006
Location: Alto, N.M.
Posts: 153
I just got off the phone with Prestone Cutomer Service. When asked about phosphate or silicate content in ANY of their coolant products I was told that NONE of the Prestone coolants have any phosphate or silicate content. ALL types of Prestone are claimed to be safe for water pumps and alloys. I change mine very two years or 4,000 miles and use only distilled water.
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