Hey, I just spent some quality time with my spray lube and hit all the
suspension bushings, kingpins, shift linkage and parking brake stuff under
my '84.  What a difference that makes.  The van now steers wonderfully and
shifts 'slicker than deer guts on a door knob..'
  I used Wurth saBesto HHS 2000, a professional high temp sticky lube.
Now someone will probably say..."Oh don't do that, it'll eat the bushings"
or something, but I've done this occaiaionally a few times per year for a
couple of years now with no adverse effects.
  While I was under, I checked the spare tire pressure and did a general
visual inspection of the fuel lines, etc.  And I lubed all the moving
stuff inside and around the body of the van, too.
  Give your van a treat and it'll reward you by behaving very nicely,
indeed.
  Don Hanson