I just installed the Prestone 5/150 ExtendedLife, orange, silicate and
phosphate free coolant.  Where might I read about the silicate
requirement for our waterpumps?  Thank you.
-Dana-

dave wrote:
>
> You do not want to use a silicate free coolant in a Vanagon.  Silicate is a
> lubricant that is necessary for the waterpump.  I made the mistake of using
> Autobahn silicate/phosphate free (pink) and burned up a waterpump in 20k
> miles.  The correct coolant is Autobahn phosphate free with silicate, which
> is blue.  It is my understanding that all new VW's are now designed to use
> the silicate free coolant.
>
> dave
> dave@251.org