Use regular as the I6 engines are very low compression and prefer low octane fuels .
I don't live where ethanol free Motor Fuels are sold but I'd never use ethanol if I didn't have to . YMMV Etc. -Nate ---In old-chevy-truck@yahoogroups.com, <old-chevy-truck@yahoogroups.com> wrote: 1.) I still have my original 216 motor in my 1949 3600. Is it better for gas mileage and general wear and tear to use Non-ethanol gas? If so should I use the premium or regular stuff. Thanks guys.
