yeah,

i think its a polydimethylsiloxane. but molecular weight unknown, and
correct viscosity...

Derek Drew mentions he has a bottle of the right stuff, but was
warned against trying a refill by some VC expert. I think that is
related on his VC page (linked by neil below)

I don't think that vc refilling will ever become an easy do it
yourself project. I just like to de-mystify the subject :)

alistair

On 3-Apr-10, at 10:07 AM, neil n wrote:

On Sat, Apr 3, 2010 at 9:35 AM, Alistair Bell <albell@shaw.ca> wrote:
> dont need to be a chem major, just need to get the specifications of
> the original siloxane and compare to what you can buy off the shelf.
>
> Problem is, original specs are not published, or perhaps Derek Drew
> knows.
>

I am not a chemistry type, but was curious.

 From Wiki on Siloxane:

http://en.wikipedia.org/wiki/Siloxane

Dow Corning on their VC automotive use product:

http://tinyurl.com/ydh2d6j

One example of a polymerized siloxane on Wiki page is
polydimethylsiloxane. DC's description of the VC product is
"Dimethyl-based viscous coupling fluid".  "Silicone Oil"  shown here:

http://www.thesage.com/catalog/products/Dimethicone.html

says "polydimethylsiloxane"

Could DC's product be the right stuff for Vanagon VC? If so, group buy?

Here's a Vanagon page by Drew on VC. I'm sure most have seen it, but
I hadn't.

http://tinyurl.com/yg5s83a

Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-
engines