Bruce McFadden wrote:
Does anyone know if there is an STC for use of auto fuel in a PA32-260.
I've been unable to find one. At $3.30/gal for avgas at KBHM I've got
to stop the bleeding a bit.


Whoops, the PA-32 isn't a twin, my bad. Still neither the EAA nor
Petersen have an STC for it.

The URLS a

http://www.eaa.org/education/fuel/ for the EAA

and

http://www.autofuelstc.com/ for Petersen.

Petersen used to have a list of airframes tested and failed but I can't find it.
You might email them. They do support some O-540 models (this is what you have
right?) but the airframe isn't listed.