Quote Originally Posted by cdrmuetzel@juno.com View Post
When in doubt, look it up. don't need 93AKI for Petersen STCs:


http://www.autofuelstc.com/stc_specs.phtml
http://www.autofuelstc.com/

but cost savings? around here we can get 100ll avgas at the airport for as low as $4.87, octane-unspecified-on-the-web mogas at the airport for $4.90, or ethanol-free 90(?) octane boat gas at the local stop&rob for $5.00. name yer poison, pilgrim. your mileage may vary.
Let's see... it says, "91 Octane Minimum"

But then... note the thread title, "Piper completes flight tests of Archer fueld by 93 Octane"

It seems we have a disconnect here...

Of course, in parts of the mountanous west, even 91 UL is difficult to find... RUL is 85... MUL is 87, PUL is 89...

Paul