Poking fun at current events...
Ethanol has a corrosive effect on fuel tanks and other components, see link
 ASTRALMAX
                                                
                                                Level 8
                                                Apr 13, 2022
                                            
                                                
                                                    ASTRALMAX
                                                
                                                Level 8
                                                Apr 13, 2022                                            
                                        I heard I was going to have trouble when I bought my 1996 tiny Winnebago with a 1995 VW 4-stroke gas engine. Beause "ethanol would kill it"
. Never has had anything but ethanol gas (Regular grade gas) in it, still starts & runs like a top with simple regular oil change &, normal maintenance.
Nor has our little cult of Rialta owners had any ethanol-caused problems and many units are topping 200,000 miles.
@AnneWimsey @AnneWimsey It could be that the problems that occurred with vehicles that were made between specific years but there is no information in the article about it other than vehicles manufactured before 1993. I recall reading a similar article last year in which it was mention that vehicles made in 2003 experienced problems with using fuels that contain ethanol, who knows?