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VW Coolant

you ever try the Toyota coolant?  I used it while I was working for
toyota and it worked great.

On 6/15/05, John Gates <gatesj@mailblocks.com> wrote:
> I have heard that G11 corrodes VR6 head surfaces but I have kept the
> blue in my VR6 changed and never had any problems.  I have also heard,
> possibly from AWE tuning if I recall, that the only VR6 heads showing
> that problem were ones that had their blue turn acidic, indicated
> clearly by color, it turns greenish/yellowish/brownish.  So the coolant
> in those cars had clearly turned color a long time prior.  That was
> what was great about the blue, it had a litmus dye in it so you knew it
> was bad.  If allowed to turn acidic, yes, it will eat heads.  If you
> keep it changed, then it's the best one out there IMHO.
> 
> And yes, Dexcool sucks especically in our vehicles.  GM started finding
> that it really gunked systems up that were not keep 100% full, i.e.
> there was some air in them.  Remember US cars are different, the main
> circuit is not supposed to have any air in it and the expansion tank is
> just a catch tank, no circulation through.  Our systems have air in
> them by design, so it's a very bad idea to use Dexcool.
> 
> John Gates
> --
> '85 Scirocco
> '97 Jetta GLX
> 
> -----Original Message-----
> From: ken weidmann <glxtasy@hotmail.com>
> To: scirocco-l@scirocco.org
> Sent: Tue, 07 Jun 2005 10:31:04 -0700
> Subject: VW Coolant
> 
> The G-12 is fine but the G-11 coolant has problems. Many of the early
> VR6's had problems where the coolant actually ate away the aluminum
> cylinder head.  Most of the guys that I know (myself included) switched
> over to the G-12 to avoid having problems.
> 
> Just a not though. Apparently the G-11 and G-12 don't play well
> together so you need to flush the system very well to avoid comingling
> of the coolants.
> 
> Ken
> 1985 1/2 wolfsburg Show-rocco
> 1995 Jetta Glxtasy
> 1957 Porsche 356a
> 
> 
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