GA prepares for unleaded future

So, if the compatibility concerns aren't real then why can't I use ethanol blended autogas in my 172 with an autogas STC? Go.

I don't know. What does the STC say about it?

As I've said before, there may be other good reasons not to use ethanol blends in airplanes, but compatibility of the ethanol with rubber isn't a valid one.
 
I don't know. What does the STC say about it?

As I've said before, there may be other good reasons not to use ethanol blends in airplanes, but compatibility of the ethanol with rubber isn't a valid one.


It says Ethanol is not compatible with some gaskets and hoses and aluminum and may damage fuel system components use of ethanol blended fuel is prohibited. If no ethanol free fuel can be found revert to 100LL.
 
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