I never had small engine fuel problems and now I do... nothing has changed except the gas formula for California???
When the phase in started... the local mechanic had a rash of old carb cars with fuel pump failures and fuel line leaks...
I had 3 and it's the only time I have ever had the problem before or after.
The fuel lines in the 76 Rabbit, 68 Mustang and 66 Mustang all went bad and each had a strong odor of gas...
Every morning the drive time shows reported at least one older car with a vehicle fire...
It is not without risk when components in use were not designed for it.
Another problem is the Fuel Tank Sloshing compounds used to seal and coat tanks... aviation use and many of the old car guys used it too...
The new fuel turns the compound into one sticky mess... and lucky me... I restored several cars using the compound back in the 1970's...