Patch it is.

I have it cleaned, sanded, cross scored with a blade, cleaned, solvent
cleaned, singed with a lighter to expose carbon for bonding.  Now it's tape
masked for a controlled clean patch.

I've got fresh JB Weld on hand. I will now do a thin coat, imbed fiberglass
wallboard tape for reinforcing.
After short short cure a second thin coat of JB weld.

I know the West System, Its great. But not on hand hear and I am driving
tomorrow.

Thanks again to all for the assistance.

Scott, I have no idea ID of the wrong tank I purchased.  It was mislabeled
in the listing.  Wrong moouning points, extra hole on top. Bigger pose
nipples. I'm returning it.

Frank

On Sat, Nov 19, 2011 at 11:10 AM, Don Hanson <dhanson928@gmail.com> wrote:

> On Sat, Nov 19, 2011 at 5:27 AM, Ken Wilford <kenwilfy@comcast.net> wrote:
>
> > I have brand new 82 Diesel Expansion tanks in stock for $149.  The part
> > number is 068121405B.
> >
> > I have two in stock at the moment.  Why cobble something together when
> > you can buy a brand new (not NOS) OE tank?
> > Made by VW in Germany.
> >
> > HTH.
> >
> > Ken Wilford
> > John 3:16
> > www.vanagain.com
> >
> >
>   I have one of those brand new tanks in my vanagon...kept as a spare,
> under my bench seat now for about 25k miles and a couple of years time.  I
> patched my old leaky one using WEST epoxy, which I find easier, less
> expensive and more versitile than JB Weld for stuff like this.  I got the
> second because I thought my 'temporary' fix wouldn't actually work for
> long, but it has.... so I have not  changed to the new one.
>  Amazing stuff, epoxy.  The West System has various additives you can mix
> in to give it different characteristics, depending on what you want to do
> with it..
>
>  The repair process outlined in another post, that's about right....I use
> Simple Green to de-grease, then I use a wire wheel to rough-up the
> plastic.  I clean it well with acetone before the epoxy goes on.  "Clean"
> is the key to getting a lasting bond with any epoxy patch..
>
>  Don Hanson
>