Some Marathons have what they call 90 Plus recreational gas which is NON-ethanol. It's good if you're gonna leave it sitting awhile, has a longer shelf life than ethanol gas.
Matthew 6:33
1952 Chevy 1/2-ton 3100 Late '55 235/SM420/torque tube 3.55 Dalton Highway survivor (using original 216) www.truckwithaheart.com