that statement is wrong, and has perpetuated a misconception. One of
VW's own docs says same, but research paper (linked on my site,
written by an Audi/vw engineer) shows that the siloxane's viscosity
does not increase with temp.

its a shear thickening fluid, the shear is what does it, temp rise a
by product.

also, mohan (paper on my blog too) shows that smooth plates in a lab
set up works just as well.

the burrs might be involved at the hump stage (STA), but it has not
been explained

alistair

On 3-Apr-10, at 11:19 AM, neil n wrote:

Looking at the FAQ's on Vanagon page, I see that heat causes fluid to
thicken. From that page: "VW says this happens as quickly as 1/4 turn
of the spinning rear tire." I bet the burrs are like little paddles.
w/o them would fluid not heat up as quickly?