Techron & Valve Deposits esp. 20v

[Paul_Royal@isserv9.idx.com]

  Hi Folks,
       Just trying again:
       Here in the Northeast US (and lots of other places) we are forced
  to buy oxygenated fuel during the winter months (at least).  I have heard
  that
  the running of oxygenated fuels exacerbates the problem of valve
  deposits.
  If this is true, I suspect the problem would be worse for us 20valvers.

       A:  Has anyone else heard this or have data to back it up?
       B:  I don't use the Techron additive (or Autobahn) now....
             should I?  Especially with, or only with Oxygenated fuels?
       C: Does anyone have a list of major oil companies whose
                       fuels claim to be "valve friendly" as described in
  owners'
                       manuals.

  -Royal