Well,
put in 1/4 oz of the fluorescent dye into about 1/2 cup of oil and poured it down. 
Took her out for a spin up on the freeway for a quick run and back to the garage with the black light.
You can really see this stuff at night extremely well, its like your on the CSI TV show.
My newly rebuilt 2.1 is leaking right behind the pump cover plate lower right corner best I can tell. 
I am thinking its got to be a bad pump or cover or gasket or whatever. 
Weird thing is its leaking a fair amount and I know torqued it all down and used plenty of permatex on both of the gaskets. 
I am going to run it some more tomorrow and then I will have to pull all the goodies off the back to get at the oil pump and perhaps with the light I can see better.
Oh, well, it will be a nice little adventure back in, perhaps I can find that slight exhaust leak too.
Sorry I deleted some of the messages,
Thanks to the fellow vanagon member who told me about the dye and the wal-mart black light its works fantastic.

slowly getting the 89 wolfy sorted out

Doug

  ----- Original Message ----- 
  From: Doug in Calif 
  To: vanagon@GERRY.VANAGON.COM 
  Sent: Friday, June 04, 2004 5:51 PM
  Subject: My oil leak please help!

  Well my dino oil is finding its way out of my engine so perhaps its running scared with all the synthetic talk over the past few days.

  One of the vanagon members posted about a dye you can put in the oil and it will show with a black light.
  I was able to pick up some from my local high end auto store today.  
  I will be rigging up the black light this eve to check out the leak with the fluorescent additive.

  I did do some more looking and it looks like it may be the freeze plug near the dip stick.
  The one that is about the size of a quarter.

  How often does this leak?
  Why does it begin to leak?
  How do you fix it if its leaking?

  Arrrrrrrrrrrrgh!

  Just rebuilt this baby down to polishing the crank journals by hand on my workbench.