Yup, two of mine developed leaks last year and I did a similar thing. I
used a product called 3M Window Weld Resealant.
It comes in a pint (?) can and is runny and black. You screw 3M's pump
dispenser on the top of the can. The dispenser looks like a pump oiler
oil can (Plews), but has a thin removable tip.
I bought this stuff at least 15 years back and just now bought a refill.
I got the refill at an O' Reilly Auto Parts store. they had to order it.
It took about 3 days and cost $21 or so.
You inject this stuff around the outside of the seal between the rubber
and the body. It's pretty runny, but dries in about a day and the excess
needs to be cleaned off a few times. It worked well for me. on both the
82 and 87. the 82 had had a new windshield and rubber back in the mid
90's, so it was softer than the 87's. but they were both leaking.
Al Brase

John Bange wrote:

>>It's got a brand new BD solid rubber seal. The metal was cleaned
>>thoroughly. It's really got me mystified.
>>
>>
>>
>
>My window rubber is still original, but I had matching left and right
>"mystery puddles" on each side every time it rained, no sign of water
>anywhere but the floor. I filled the space under the windshield rubber
>outside with 3M Heavy Duty Drip-Chek sealant and since then haven't seen a
>drop. The stuff stinks like model cement, but it's like liquid chewing gum:
>once it cures, ain't nuthin' getting in. Since Vanagons aren't known for
>well-sealing windshield rubber and that's what's changed on your van, it's
>probably worth doing anyway. It's not terribly expensive and it can't hurt
>to try it.
>
>--
>John Bange
>'90 Vanagon - "Geldsauger"
>
>
>