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interesting coolant stuff
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Might be right about the tag, but I do remember that one type is not
recommended for the plastic to aluminum bonding...
-Raffi
At 10:57 AM 3/24/2003 -0800, Dan Smith wrote:
>Pretty sure the cap says 'Use only VW brand phosphate free coolant' or
>something similiar.
>
>Dan
>
> Euroroc II <flaatr@yahoo.com> wrote:
>>All I remember is not to use one of the glycol's, polypropylene or
>>polyethylene, one is safe and one is bad...
>>
>>Bad is defined as it does not protect the bonding of the aluminum core to
>>the plastic ends on the radiator.
>>
>>Been using the blue stuff (look another color) from the dealer. I think the
>>warning tag that most people hove lost, the one that goes around the filler
>>cap on the expansion tank, warns what is safe to use. I'll look at mine and
>>get back to you.
>>
>>-RGK-
>>
>>At 12:09 PM 3/24/2003 -0500, rfkellner@snet.net wrote:
>> >It seems like we have run the full gamut of coolant opinions. From
>> >straight H2O to never use the green to never use the pink/orange. Can
>> >anyone point to some industry papers or independent studies?
>> >
>> >Also, for someone that wants to run straight H2O aren't there plain
>> >additives to inhibit corrosion? If so, what is in these products?
>> >
>> >Thanks, Rick K. Soon to change water pump and coolant.....
>> >
>> >Original Message:
>> >-----------------
>> >From: ian Butler ian@bluemoon.hplx.net
>> >Date: Mon, 24 Mar 2003 10:03:55 -0500 (EST)
>> >To: tberk@mindspring.com, scirocco-l@scirocco.org
>> >Subject: Re: interesting coolant stuff
>> >
>> >
>> >On Mon, 24 Mar 2003, T Berk wrote:
>> >
>> > > It's SILICA that is abrasive in old style coolant, it rubs seal to
>> > > death and is prob. the main cause (right up there with stiff belts
>> > > drawn too tight) of weepy waterpumps.
>> >
>> > > Check the label of the orange stuff next time; silica free. Prob.
>> > > partly the reason the orange stuff seems to creep out around hoses and
>> > > cause that scabby crust as well.
>> >
>> >I believe Dex and other long-life coolants have special detergents that,
>> >more or less like synthetic, have a tendency to "clean things up",
>> which can
>> >involve removing gunk that's keeping the system from leaking.
>> >
>> >More importantly, though, green antifreeze contains phosphates, and
>> >phosphates eat aluminum. It's not a big deal in inline cars like
>> >Sciroccos, but it's a *huge* deal in Vanagons, where coolant sits in the
>> >heads, seeps under the gaskets, and pits/rusts its way right through to the
>> >ground. Such a serious and expensive problem on those that a lot of
>> >prospective Vanagon buyers won't touch a bus with green coolant in it.
>> >
>> >It hasn't concerned me enough to immediately replace the green coolant
>> in my
>> >'roc (not that I've had the stupid thing since November anyway.. grumble)
>> >but it's about due for a flush, and it'll get Dex when I fill it again.
>> >
>> > > btw- Yep, water conducts better than coolant, 70/30 water to coolant
>> > > seems like a good nominal minimum.
>> >
>> >I believe 70/30 is minimum and 30/70 is maximum. Supposedly if you go above
>> >30/70,
>> th<http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html>Yahoo!
>> Platinum - Watch CBS' NCAA March Madness,
>> <http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html>live
>> on your desktop!
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<html>
Might be right about the tag, but I do remember that one type is not
recommended for the plastic to aluminum bonding...<br><br>
-Raffi<br><br>
At 10:57 AM 3/24/2003 -0800, Dan Smith wrote:<br><br>
<blockquote type=cite class=cite cite>Pretty sure the cap says 'Use only
VW brand phosphate free coolant' or something similiar. <br><br>
Dan <br><br>
<b><i>Euroroc II <flaatr@yahoo.com></i></b> wrote: <br>
<blockquote type=cite class=cite cite>All I remember is not to use one of
the glycol's, polypropylene or <br>
polyethylene, one is safe and one is bad...<br><br>
Bad is defined as it does not protect the bonding of the aluminum core to
<br>
the plastic ends on the radiator.<br><br>
Been using the blue stuff (look another color) from the dealer. I think
the <br>
warning tag that most people hove lost, the one that goes around the
filler <br>
cap on the expansion tank, warns what is safe to use. I'll look at mine
and <br>
get back to you.<br><br>
-RGK-<br><br>
At 12:09 PM 3/24/2003 -0500, rfkellner@snet.net wrote:<br>
>It seems like we have run the full gamut of coolant opinions.
From<br>
>straight H2O to never use the green to never use the pink/orange.
Can<br>
>anyone point to some industry papers or independent studies?<br>
><br>
>Also, for someone that wants to run straight H2O aren't there
plain<br>
>additives to inhibit corrosion? If so, what is in these
products?<br>
><br>
>Thanks, Rick K. Soon to change water pump and coolant.....<br>
><br>
>Original Message:<br>
>-----------------<br>
>From: ian Butler ian@bluemoon.hplx.net<br>
>Date: Mon, 24 Mar 2003 10:03:55 -0500 (EST)<br>
>To: tberk@mindspring.com, scirocco-l@scirocco.org<br>
>Subject: Re: interesting coolant stuff<br>
><br>
><br>
>On Mon, 24 Mar 2003, T Berk wrote:<br>
><br>
> > It's SILICA that is abrasive in old style coolant, it rubs seal
to<br>
> > death and is prob. the main cause (right up there with stiff
belts<br>
> > drawn too tight) of weepy waterpumps.<br>
><br>
> > Check the label of the orange stuff next time; silica free.
Prob.<br>
> > partly the reason the orange stuff seems to creep out around
hoses and<br>
> > cause that scabby crust as well.<br>
><br>
>I believe Dex and other long-life coolants have special detergents
that,<br>
>more or less like synthetic, have a tendency to "clean things
up", which can<br>
>involve removing gunk that's keeping the system from leaking.<br>
><br>
>More importantly, though, green antifreeze contains phosphates,
and<br>
>phosphates eat aluminum. It's not a big deal in inline cars
like<br>
>Sciroccos, but it's a *huge* deal in Vanagons, where coolant sits in
the<br>
>heads, seeps under the gaskets, and pits/rusts its way right through
to the<br>
>ground. Such a serious and expensive problem on those that a lot
of<br>
>prospective Vanagon buyers won't touch a bus with green coolant in
it.<br>
><br>
>It hasn't concerned me enough to immediately replace the green
coolant in my<br>
>'roc (not that I've had the stupid thing since November anyway..
grumble)<br>
>but it's about due for a flush, and it'll get Dex when I fill it
again.<br>
><br>
> > btw- Yep, water conducts better than coolant, 70/30 water to
coolant<br>
> > seems like a good nominal minimum.<br>
><br>
>I believe 70/30 is minimum and 30/70 is maximum. Supposedly if you go
above<br>
>30/70,
th<a href="http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html";>Yahoo!
Platinum</a> - Watch CBS' NCAA March Madness,
<a href="http://rd.yahoo.com/platinum/evt=8162/*http://platinum.yahoo.com/splash.html";>live
on your desktop</a>! </blockquote></blockquote></html>
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