VW Coolant

[tyrone27 at gmail.com (Derrick floyd)]

I seen G-12 doing the same on A4 putting a pink gumm out side of
hoses.  plus another thing I don't like about G-12 is that if you blow
a headgasket or ther is a SMALL leak it Gumms up the motor or if you
mix it it gumms up the motor.

On 6/16/05, John Gates <gatesj@mailblocks.com> wrote:
> I think this discussion is interesting, one of the hits from the google
> search I mentioned before:
> 
> http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=37;t=000112;p=0
> 
> -----Original Message-----
> From: David Utley <fahrvegnugen@cox.net>
> To: John Gates <gatesj@mailblocks.com>; tyrone27@gmail.com
> Cc: scirocco-l@scirocco.org; glxtasy@hotmail.com
> Sent: Thu, 16 Jun 2005 11:31:44 -0400
> Subject: Re: Re: VW Coolant
> 
> John,
>   Thanks for the details.  I had not seen the Blue Coolant (G11) ooze
> out of
> fittings like I have with the Red Coolant (G12).  Anyone else seen this
> stuff
> ooze out?
> 
> If the hose is about to fail, then I could see this happening.  As the
> hose
> weakens, it looses its' tension and since the cooling system is under
> pressure,
> it would push it's way out at the weakest link.
> 
> Perhaps this is what I am seeing with the G12, as it is normally at the
> water
> outlets on the A4s.  They are all plastic, and we sell them pretty
> consistently...
> 
> Thanks again John for your experience, and especially for the link.  I
> will be
> sifting through there today...
> 
> David
> >
> > From: John Gates <gatesj@mailblocks.com>
> > Date: 2005/06/16 Thu AM 11:12:55 EDT
> > To: fahrvegnugen@cox.net,  tyrone27@gmail.com
> > CC: scirocco-l@scirocco.org,  glxtasy@hotmail.com
> > Subject: Re: Re: VW Coolant
> >
> > The novel:
> >
> > That's a real good question... I did read a lot about different
> > coolants and one thing that pops into mind is that the silicates are
> > bad because they can be slightly abrasive to water pump bearings and
> > after a while they precipitate out and make a gummy mess if you don't
> > keep it changed, but the upside is not only are they a good corrosion
> > inhibitor, but they will actually patch erosion damage on water pump
> > impellers that comes from cavitation.  G-12 has nothing similar in it
> > to "patch".  I also understand that how traditional coolants inhibit
> > corrosion is that they deposit a very thin layer of their inhibitors,
> > whether they are phospates, silicates, borates, or a combination of
> > these, on all surfaces inside the cooling system.  This insulates the
> > parts from any corrosive elements.  G-12 or other OAT coolants do not
> > do this, they are formulated to make the solution not corrosive for a
> > longer period of time.
> >
> > I have had, especially on my VR6, blue crusties at the end of hoses
> > where they clamp onto fittings, well in advance of hose failure.  The
> > first time I didn't recognize what was happening, I just thought I
> > wasn't getting a good seal, and then the hose finally burst at a ring
> > of weakened material just ahead of the fitting barb.  What was
> > happening was that the inside of the hose at this "ring" had finally
> > given way and the coolant was getting into that middle layer with the
> > fabric and migrating up to the end of the hose through there.  I
> never
> > really lost an appreciable amount of coolant while this was going on
> > though.
> >
> > I wonder if the blue stuff is better at "repairing" or plugging tiny
> > leaks like this because of the silicates, and just masking a problem
> > that is already there, while the G12 is not?  I know I saw tiny
> pitting
> > on my cylinder head inlets on my Scirocco where the o-ring goes.
> >
> > I personally think that the G-12 was VW's attempt at trying to shield
> > themselves from customers who don't maintain their cars during the
> > warranty period.  I bought my VR6 new, didn't change the blue stuff
> > until about 3 years, when it had JUST started turning greenish
> yellow.
> > 3 years was well within my 10 year/100,000 mile powertrain warranty,
> > and if I had let it go, I might have had headgasket leakage from
> > pitting that they might have had to fix.  I have since changed
> coolant
> > at least every 2 years and have not had headgasket problems or any
> > other unusual cooling system problems, corrosion or deposit buildups
> in
> > 8 years and 150,000 miles.  The inside of my cooling system is as
> clean
> > as can be and my water pump lasted until about 135,000 miles, quite
> > high for a VR6.  The blue stuff is great if it's maintained properly.
> 
> > I did not have my Scirocco for the first 10 years of its life and it
> > came to me with nasty old green stuff so I cannot say if it would
> have
> > been in better shape with blue that was changed often.
> >
> > This is one of the places I remember reading a bit about the
> chemistry
> > in layman's terms that I could understand:
> > http://www.imcool.com/articles/antifreeze-coolant/
> >
> > John Gates
> > --
> > '85 Scirocco
> > '97 Jetta GLX
> >
> > -----Original Message-----
> > From: David Utley <fahrvegnugen@cox.net>
> > To: John Gates <gatesj@mailblocks.com>; tyrone27@gmail.com
> > Cc: scirocco-l@scirocco.org; glxtasy@hotmail.com
> > Sent: Wed, 15 Jun 2005 17:02:39 -0400
> > Subject: Re: Re: VW Coolant
> >
> > No please, nitpick away...  :-)
> >
> > So, on the reddy-pink G12, why do you think this stuff oozes out of
> the
> > connections at the head or at the T-stat?  This is what I have seen
> on
> > the A1s,
> > which is why I will not recommend the G12 now as an upgrade...
> >
> > I am interested in your take, it sounds like you have a bit more
> > schooling/hands
> > on on this...
> >
> > David
> > >
> > > From: John Gates <gatesj@mailblocks.com>
> > > Date: 2005/06/15 Wed PM 01:23:38 EDT
> > > To: fahrvegnugen@cox.net,  tyrone27@gmail.com
> > > CC: scirocco-l@scirocco.org,  glxtasy@hotmail.com
> > > Subject: Re: Re: VW Coolant
> > >
> > > The red G-12 is silicate free, but the G-11 aka G-48 most definitely
> > > has silicates, it is one of the most abundant corrosion inhibitors
> in
> > > that preparation.  The silicate is what precipitates out in the G-11
> > > after a while, leaving the gooey mess at some of the connections,
> and
> > > this is one of the reasons why they went to G-12.
> > >
> > > There is nothing wrong even with phosphates if you don't use hard
> > > water, hard water makes phosphates precipitate out and cause all
> sorts
> > > of problems.
> > >
> > > Note that the G-12 bottle says "phosphate and silicate free" since
> > it's
> > > a true OAT technology coolant (unlike Dex-Cool which is a hybrid
> OAT),
> > > and the G-48 says only "phosphate free".
> > >
> > > Just nitpicking here.
> > >
> > > John Gates
> > > --
> > > '85 Scirocco
> > > '97 Jetta GLX
> > >
> > > -----Original Message-----
> > > From: David Utley <fahrvegnugen@cox.net>
> > > To: John Gates <gatesj@mailblocks.com>; tyrone27@gmail.com
> > > Cc: scirocco-l@scirocco.org; glxtasy@hotmail.com
> > > Sent: Wed, 15 Jun 2005 12:20:21 -0400
> > > Subject: Re: Re: VW Coolant
> > >
> > >
> > > >
> > > > From: John Gates <gatesj@mailblocks.com>
> > > > Date: 2005/06/15 Wed AM 11:38:45 EDT
> > > > To: tyrone27@gmail.com
> > > > CC: scirocco-l@scirocco.org,  glxtasy@hotmail.com
> > > > Subject: Re: VW Coolant
> > >
> > > > 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.
> > >
> > >
> > > I am told that VWs need coolant that is phosphate and silicate
> free...
> > >
> > > David
> > >
> > > '83 GTI, Daily Driver...
> > > '87 16V, parts car
> > > '82 pickup, 2.0 16V, collecting dust...
> > >
> >
> > '83 GTI, Daily Driver...
> > '87 16V, parts car
> > '82 pickup, 2.0 16V, collecting dust...
> >
> 
> '83 GTI, Daily Driver...
> '87 16V, parts car
> '82 pickup, 2.0 16V, collecting dust...
>