Big John wrote:
Cy

Wonder how they are going to prevent miss-fueling 172's with two types
of engines? Have different nozzles like used for unleaded gas in
automobiles or???????????

If I had a 172 with a Lyc or Con, I'd stand and watch each fueling to
be sure I got the correct fuel when the Centurions start showing up..

Big John
snipped

I have an RV-4 with a Lyc & I stand and watch each fueling to be sure I
got the correct fuel (type & quantity). Now. Centurion powered 172's or not.

Charlie