Haggerty commissioned a study of E-10. After saying that it can be used without significant damage to classic cars, they go on to point out several issues from using it, including: - Will loosen deposits in tank - Fuel filters will clog - Jets may clog - Seals, gaskets and lines of older compounds will deteriorate - Soft parts may have a somewhat shorter life than expected - Some particulate build-up may occur
Source, Haggerty - Fall 2009 pages 34-37 "Safe at the Pump? E10 won’t stop you from using your collector vehicle, but you’ll have to be more vigilant about fuel system maintenance."
