Yep, worked for me too.  At least on one van.  The other one was less
cooperative.  Maybe that's the difference btw a good, but squeaking, bushing
and one that need replacing.

>From: John Graham <theklube@GMAIL.COM>
>Reply-To: John Graham <theklube@GMAIL.COM>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: Squeaky front end parts
>Date: Wed, 20 Sep 2006 09:41:07 -0400
>
>Report of solution!
>
>On the way home last night, I stopped at a NAPA store and bought a can of
>PB
>Blaster for a whopping $4.61.  This morning before leaving for work, I
>simply sprayed the joints that I could easily see from outside the front
>wheel wells and like magic, the noises have gone away!
>
>The points I was able to easily get were the upper control arm bushings,
>the
>anti-sway bar bushing and the 'link' that has the long rod that goes
>diagonally towards the front (real technical this morning) BUT they're all
>quiet now.  I'm happy.
>
>PB Blaster appears to have been developed to primarily help with removing
>long rusted hardware, but the can does mention eliminating squeaks.  It
>does.  Blaster has a very fine focused spray stream which helped get the
>goods where they needed to be.
>
>John Graham
>88 Westy
>Charlotte, NC