Spoiler on Coupe GT

[VE3LC@hydra.carleton.ca (Norm Rashleigh)]

So here's another question that might prompt some responses...

On my 1986 Audi Coupe GT, it of course has a stock dinky spoiler on the back
trunk lid.  Does it really offer any enhanced drivability to the car or is
it strickly cosmetic?  Does anybody have any figures that show the downward
thrust it places on the back end proportional to speed?  Maybe it causes a
swirl in the air to keep the rear window clear in snow and such, any comment?

The spoiler is made of rubber and due to UV damage over time, has lost its
shine. Anybody have any experience re-finishing the surface of this spoiler?
What about replacement availability and cost?

Norm Rashleigh
Ottawa Canada....