---- Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM> wrote:
> hi John...
>
> 1. Using Blue Coolant totally is NOT needed in vanagons ..
> proper attention to coolant mixture and age etc ..IS required of course !
>
> Very Much So ........and I have my own tricks for keeping coolant and
> aluminum parts very healthy .,
> but using blue coolant is not part of my method.
>
> 2. VW sells a 'mixes with anything ' coolant now ..
> expensive, as high as $ 24 or so per gallon ..
> if you 'must' have a blue coolant compatible a-frz juice.
>
> there is also an aftermarket a-frz you can buy that 'mixes with any type of coolant.'

The coolants that are labeled as compatible with all other coolants and for all makes of vehicles are simply not necessarily so.  The makers will not reveal what their additives are.  They likely include phosphate.  I would only use a coolant that is specifically labeled as phosphate free.

mcneely