Phosphate-free Antifreeze?

Alan Cordeiro alancordeiro at
Fri Feb 27 17:20:38 EST 2004

Prestone "extended life" GM-Dexcool approved (red color) coolant
and the Pentosin brand to name a couple...

Both products are safe for use with Aluminum radiators, especially
when dissimilar metals (cast iron block and the aluminum) are used which
can cause the galvanic effect to make the corrosion speed up.


----- Original Message -----
From: "Kerry Griffith" <i2k at>
To: <200q20v at>
Sent: Friday, February 27, 2004 4:36 PM
Subject: Phosphate-free Antifreeze?

> The manual calls for phosphate-free antifreeze. Who makes such a product,
> and why is it necessary?
> TIA,
> Kerry
> BTW, my oil consumption continues to be nil at 111k. The car has been on a
> steady diet of Mobil 1 since new, which may or may not be a factor.
> _______________________________________________
> 200q20v mailing list
> 200q20v at

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