Here is a recommendation for ATF.
http://www.bright.net/~vwdiesel/atf.htm

Bill
----- Original Message -----
From: Doug Alcock <dgalcock@HEWITT.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, October 04, 1999 6:06 PM
Subject: Marvel Mystery Oil

FWIW ----This quote:
"Marvel Mystery oil is a very light naptha-based machine oil
with
wintergreen and a little phosphorous in it.
Many lightplane owners use it as a gasoline additive. It burns
pretty clean
 in small quantities and isn't as gimmicky as it sounds. "
is from, this link:
http://vger.rutgers.edu/~ravi/bike/pages/pages/docs/storage.html

Doug
'84 Westy
Toronto, Canada