All petrol engine owners should by now have changed to rubber fuel lines which are rated for high ethanol content. Sorry but I don't have a spec or standard for those. Increasing ethanol content is an ongoing certainty.
If not, flexible fuel lines will rot from the inside resulting in vehicle fires.
It is good news for most, but I accept that it's not for owners who haven't changed their flexible fuel lines yet.
Doesn't affect me as my fleet is all diesel!