Sometimes I feel like I should just keep my mouth shut, and some times I feel like yelling WTF?
I just saw a guy pumping gas into his mid-80-ish 930 at a Race Way/Race Trac convenience store.

I have read so much on this forum about and listened as qualified 911 techs have talked about fuel/octane/detergents/additives, etc. and when I saw that it amazed me.
True, it's not my car. But why would one want to use "cheap" gas in a 911/930... especially with the turbo and all.
Are we just wasting money on "quality" gasoline? Is my search for non-ethanol- laced fuel just a waste of fuel and time? If one uses 93 octane from a convenience store is it as good as using Shell/Chevron/Texaco, etc.
Of course, one could say he was in a pinch and could not make it two miles down the highway to a better station, but there was a Shell convenience store across the street. And, we're not supposed to let our tanks run dry, are we?
I don't mean to disparage him or his car, he's local, that's why I'm not mentioning the color or unique license plate he had.
But,
WTF?