@ MALEW As you don't put your Country of residence, (Why the hell are people so coy about that? I can understand not wanting to be tracked down, but really! ).......Your term "Automotive Gasoline" leads one to guess USA /Canada....or possibly Europe where English is a second language?
Anyway, In UK It is currently mandated in law that Road diesel shall contain ~6% bio-fuel . They daren't raise this, as, perversely, it's mainly the modern Commom rail systems and some high-pressure conventional pumps whichhave problems.
THE SAME RULING IS BEING APPLIED TO ROAD FUEL (PETROL /GASOLINE)
Leaded pump-petrol is now extinct. Unleaded , by and large contains a small percentage of Bio (Ethanol)
It eats certain rubbers, alloys (aluminium with zinc is common- Mazak) and brass...(Which again contains zinc)
A friend has had a great deal of trouble with his 1960's motorbikes, left over winter in a well insulated garage... the brass filter screen on the fuel taps ,was completely eaten away and the petrol was a greenish colour!
I URGE ANYONE, CONTEMPLATING BUYING FILLING-STATION FUEL, TO DO YOUR DUE DILIGENCE...CHECK THE SOURCE DISTRIBUTOR AND REFINERY WHERE THE FUEL COMES FROM.....some brands/grades DO contain Ethanol, some don't.
AIUI, Certain Rotax-powered machinery is certified as OK with a small Ethanol content, Some cases, the engine is OK but the airframe fuel system is NOT.
FAILURE TO CHECK COULD KILL YOU!!!!!