Sierra is also prop. glycol.
bmc  :)
"Faith will move mountains, but you'd better bring a shovel...."

> From: "John P. Flaherty" <jflahert@MAINE.RR.COM>
> Reply-To: "John P. Flaherty" <jflahert@MAINE.RR.COM>
> Date: Sun, 23 Dec 2001 21:24:17 -0500
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: VW antifreeze ?
>
> Interesting article. If I'm reading it correctly, I get the impression that,
> in the event of a head gasket leak, the propylene glycol is less likely to
> damage the mating surface. Isn't that nice.
>
> Of course they're trying to sell propylene glycol, so they can't be expected
> to discuss its drawbacks. Anyone else want to take a stab at that?
>
>
> John Flaherty
> Portland, Maine
> '84 GL
> ----- Original Message -----
> From: Robert Keezer
> To: jflahert@MAINE.RR.COM ; vanagon@GERRY.VANAGON.COM
> Sent: Sunday, December 23, 2001 9:06 PM
> Subject: Re: VW antifreeze ?
>
>
> Has anyone ever heard of or used Neo products?I found some interesting info on
> antifreeze by this company that may be enlightening to us all.
>
> They have a article about the differences between Propylene and Etheylene
> Glycol that is very educational.
>
> When it comes to coolant , after reading this article it may be time for me to
> think outside the box.
>
> www.neosyntheticoil.com/coolant.htm
>
>
>
> Robert K
>
> 1982 Westfalia w/2.0 Golf engine
>
>
>
>
>
>
>
> Robert
> 1982 Westfalia
>> From: "John P. Flaherty"
>> Reply-To: "John P. Flaherty"
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Re: VW antifreeze ?
>> Date: Sun, 23 Dec 2001 19:45:34 -0500
>>
>> I've used Sierra for a couple of years without problem. The label absolutely
>> does say phosphate free.
>>
>> Now I'll ask the chemists on the list. Isn't the only purpose of the ethelyne
>> glycol to lower the freezing point? If so, what difference could propylene
>> glycol make to the engine? I know it's heat transference isn't quite the same
>> but I never noticed a difference in my temp guage reading.
>>
>> Also, didn't I read on the list that the orange stuff tends to gum up after a
>> couple of years?
>>
>> John Flaherty
>> Portland, Maine
>> '84 GL
>> ----- Original Message -----
>> From: Robert Keezer
>> To: vanagon@GERRY.VANAGON.COM
>> Sent: Sunday, December 23, 2001 3:09 PM
>> Subject: Re: VW antifreeze ?
>>
>>
>> You Wrote:
>>
>>
>>> Could someone please tell me the VW part number for the correct Autobahn
>>> antifreeze to use. My local VW dealer said to use Prestone.
>>> I have been using Sierra as it says that its Phosphate free.
>>>
>>> Steve Cotsford
>>
>> Though Sierra may be phosphate free, it is propylene glycol based, not
>> ethylene, as has VW recommended.
>> If you study the labels you will see that the Orange Dex-Cool or Orange
>> Extended life anti-freeze labels state the formula is ethylene glycol based
>> which doesn't contain phosphates, silicates, bromides or amines.
>> The green propylene glycol based antifreeze Sierra may be safe for animals
>> and perhaps the environment-but the engine? If it is phosphate free, the
>> label did'nt say phosphate free or I missed seeing it.
>> So far what I have learned from the list and others , the Orange stuff is
>> safe to use as a replacement for the Blue stuff. The type is most critical
>> for the WBX.
>>
>> I have been using the Prestone orange extended-life for 3 years now with no
>> problems.
>> I have seen it in the new VW's at the dealership.
>> Does anyone know if the color represents the presence or absence of
>> phosphates, amines, bromides ,silicates,propylene or etheylene glycol?
>> I am inclined to think this is a universal color coding like those used for
>> fuels like stove oil and Diesel, etc.
>>
>> Robert K
>> 1982 Westfalia w /2.0 Golf engine
>>
>>
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