Here is the last word on stopping a windsheild, or any window leak--if
in fact you feel it's coming from between the rubber and the body----

Make a stop at Ace is the Place, and get yourself a caulking tube of 30,
or 50 year black silicone-----

Now this is going to, be the tricky part, and only because your going to
attempt to do this as the window is in----it will take two guys to do it
right---

One pulls out on the moulding with a cotter pin puller or other hooked
tool, and the other lays a bead of silicone as the puller progresses
down the moulding---

It is much easier to lay a bead inside the  groove of the moulding when
the window is out---but this will work fine.

Ok---your done with the bead of silicone inside the lip of the
moulding----

Take a rag saturated with mineral spirits, and with you index finger,
smooth out the bead of silicone to the moulding----don't be too sloopy
here, make it unifom all the way around the body to rubber line----

Your done, and the window rubber will never again leak, and the silicone
will almost be totally invisable----and good for at least 30 year's--

Every Mack truck I paint, I do this to,----I have never had any rust
around the rubber mouldings, or leaks from the windsheild's or rear
window's-----ever.

Later,

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Terry--

       "Zoom, Zoom, Zoom"
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http://community.webtv.net/CTONLINE/TerrysHighOnLife