I've got a well-maintained 2000 Concorde LXi with 122200 miles logged. I've= had a recent change in driving pattern over the past 7 months; more short = trips, less long. MPG has dropped to 23 from 23.4. I was considering adding= injector cleaner to a tank or two but was advised against it by a auto-voc= ation teacher. He claims it may disturbed or dislodge sediment, particles, = or what have you that may clog the fuel pump and complicate maters.
Comments welcome. I'm still inclined to try a few bottles.