VW Coolant

[gatesj at mailblocks.com (John Gates)]

I have heard it's good, but never felt the need to try it and I really 
like the fact that the blue stuff changes colors when it turns bad...  
That's the red stuff, right?

Sounds like another opiton.  I think that like VW blue, Toyota red is 
not that much different from green except it has high borates and low 
silicates or something.

The only major thing different with VW blue from the old fasioned 
american green stuff is that it has less phosphates, and that's 
supposedly to deal with harder water in Europe.  I use distilled so it 
makes no difference but I have continued using blue "just in case".

-----Original Message-----
From: Derrick floyd <tyrone27@gmail.com>
To: John Gates <gatesj@mailblocks.com>
Cc: glxtasy@hotmail.com; scirocco-l@scirocco.org
Sent: Wed, 15 Jun 2005 10:34:14 -0500
Subject: Re: 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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