I have a 2002 Montero and went to the dealer the other day to check about a heat shield that came off. In doing that, I mentioned that my gas mileage wasn't very good on my last road trip. The dealer said that at 75k miles, Mitsubishi recommends that the injectors be cleaned. I asked how much that was going to run and they said about 2 hours of labor - so I assume that they are running some kind of additive through the fuel to clean the injectors since 2 hours isn't enough time to actually remove and clean them.

Has anyone ever had this done or know what they use? Does it help? I have heard good things about seafoam, but I am kind of skeptical about how much an additive really helps the problem.