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Old 10-04-2005, 01:17 PM   #6
MNBoxster
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Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
Quote:
Originally Posted by TVC15
Wow, great information! thanks.

Btw, How do i know which coolants are Porsche approved?
Hi,

I think you may have misunderstood. Only Porsche Coolant is approved for use.

What I am saying is that the Porsche Coolant isn't significantly any different than other Long-Life Anti-Freezes on the Market. To be sure, there are some subtle proprietary differences between Brands. But the Key here is that it needs to be Phosphate-Free.

Because there are proprietary differences, a Full Ingredient List will usually be lacking. MSDS Legislation requires that all Toxic or Dangerous ingredients be listed on a Warning Label, but be aware that this is only a Partial list of the total Ingredients. The one thing which most of these Long-Life Brands will include on their labeling is the phrase - Phosphate-Free.

The incidences where Gelling occurred which John (deliriousga) refers to are instances where Anti-Freezes containing Phosphates and one which are Phosphate-Free were mixed. Mixing coolants which are Phosphate-Free will not result in this Gelling. Hope this helps...

Happy Motoring!...Jim'99
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