Hey All, I had a 4.6 2011 Genesis previously that I ran non ethanol in per the dealers recommendation cause of the pinging I would get. It cost me $350 once to clean out the ethanol residue. Now that I have a Equus with the 5.0 I wonder if I should still be going ethanol free. It has less of an octane rating than what the manual recommends and I don't wanna have to add octane boosts if I can avoid it. What does everyone else fill up with?