Not sure how much on a full tank yet but just filled up and with using an eighth tank of gas I've pulled 70.3 miles. With 50/50 city/highway. Rather surprised with the factory fuel filter, kinda a dirty air filter, and a need of new plugs and wires. Wondering what brands you guys have found best use in filters and plugs, I was thinking ac delco for the plugs, wires, and fuel filter then either wix for a temp air filter or K&N for a more permanent replacement, any input? Thanks