I got an answer from the list on this one a few months ago. Use an
articulated or maybe better described as a U joint fitting for your 3/8
drive and a short extension. This worked fine for me. A few responses
suggested two in tandem to make the bend.  Hope this helps.

Owen
84 Westy

----- Original Message -----
From: "Dan Barrett" <nullpointer@POBOX.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, November 18, 2003 11:13 PM
Subject: oil filler tube top nut

> Volks,
> Can anyone enlighten me as to the best way to tighten the upper nut on the
oil
> filler tube, where the tube bolts to the block?  I can't for the life of
me
> get a wrench in there.
>
> d.
> 1990 GL -- "Mudskipper"
>