All the Dexron fluids are basically the same viscosity. The later ones are
performance-stability improvements and friction modifier characteristics.
For power steering viscosity over temperature is the thing that matters
most. It should be noted that VW changed the specification from ATF to the
Audi special mineral oil to improve cold weather performance. As that stuff
is excessively expensive I use the Mobil 1 synthetic ATF. Any of the
synthetic ATF's will work fine even in winter as it does not thicken up like
conventional fluids.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
David M
Sent: Sunday, February 13, 2011 3:32 PM
To: vanagon@GERRY.VANAGON.COM
Subject: What power steering fluid to use?

Manual says just "Dexron" but there are several types II, III and IV, also
Mercon. Which to use?