I can't speak authoritatively about what VW used on the seams, but
other manufacturers (and body shops) often times used lead to fill in
the seams. Be aware of that when using a grinding disc. (Use a
breathing filter at a minimum to avoid breathing in the dust, be it
lead or other material.)

On Wednesday, March 12, 2003, at 07:32  PM, Mike Kozak wrote:

>  It looks like they (vw) used some filler at these
> joints.  Am considring using the edge of a disc and digging in
> there. It's grey in color.
>