On Nov 17, 5:48*pm, Mark wrote:
If you have a composite fuel tank and the fuel available in your area
has ethanol in it then you should google something like the
following...

ethanol fiberglass fuel tanks


We stopped runing mogas in our STC'ed pawnees when CA Dumped MTBE and
went to 10% ethanol a few years back, Concern was more on the other
elements of the fuel system, I think the early Pawnee fuselage tank is
polyester.

aerodyne