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And I didn't see the need for any STC's for the Cessna and Beechcraft PTFE, ethanol compatible, hoses I cited. Rotax engines run fine with up to 10% ethanol.

Go further. Please cite your assertions. Ain't none of that here in Nebraska.

See your post #74

Not in the USA. China is flying passengers in them as of this year: https://www.militaryaerospace.com/commercial-aerospace/article/55093287/ehang-takes-passengers-on-evtol-demo-flights-in-china https://www.airport-technology.com/news/china-ehang-passenger-flights-evtol-wencheng/

Who's forcing any change to battery cars?

No, it took you nearly 2 years to find that. The quoted post was from Dec 2022, and it's September 2024 now. Two years > 10 seconds.

So, what's your point? It's already been established that most planes need changes to fuel hoses (already available from Aircraft Spruce), seals, etc. Automobiles run on methanol or ethanol at racetracks, so the seal materials exist, if needed.

Pineapple and ham on pizza seem to be more popular in Asia. Last fall, our dealer in China thought I was getting tired of Chinese food after two weeks and bought pizza like in the image.

Both items have different aldehydes in them that some people taste as soap. Red bell peppers have fewer of these compounds and so might be less objectionable. Perhaps that specific aldehyde isn't found in bugs and soaps. Likewise, the flavor components of cilantro and peppers are different...

The Romans thought it was :):):) Lupanare di Pompei by Jack Silver, on Flickr

It is denatured ethanol to avoid taxes on it. They can put 2-propanol, gasoline (hydrocarbons and aromatic compounds), or other things in it. The E98 might not be 98% ethanol! https://www.dlra.org.au/safety-data-sheets/powerpluse98-msds.pdf...

Cilantro. Some people like it but other people think it tastes like soap. https://www.nature.com/articles/nature.2012.11398 The same people generally don't like bell peppers either.

Yes, exactly! Apparently, Parker/Stratoflex will.

Don't try drinking it. It's another way to go blind as methanol preferentially damages the optic nerve.

Same with gasoline. That's why we have turbochargers, superchargers, etc. Stuffing more fuel into a cylinder does nothing unless you can oxidize it (air).

Please see my citations in post #64 for Aircraft Spruce and Parker/Stratoflex. Aircraft Spruce lists fuel hoses for various Cessna and Beechcraft aircraft made under the Stratoflex brand. The Stratoflex link indicates the fuel lines are PTFE which are ethanol compatible.

It's not one or the other. After fermentation, the remaining material becomes "distiller's grain" and is then fed to livestock, or used for other purposes.

No, mainly because I'm not an A&P. I don't pretend to knowledge I don't have. I don't know which lines have a TSO approval, PMA approval, or if other documentation is needed. This link shows replacement fuel lines for various Cessna models- for the purposes of this conversation, I'll assume they...

Not ALL of them, but enough to see they are all nearly the same. There really aren't that many refineries. Oxygenates are ethanol, butanol, and various ethers (MTBE, ETBE, and so forth). The ethers aren't used much anymore in the USA. Acetone is added to racing fuel by the user. How about you...

What planes use NBR formulations for hoses? Some planes don't. The oil lines don't count because no fuel should be in those. If it is, a swollen hose isn't the important problem. What ketones are in fuel blends? Here's a typical SDS for automotive gas- no ketones...