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I have a 2001 5.4 xlt with 59k Truck runs perfect but was wondering, when I should have the injectors cleaned? Should I have it professonaly be done or some gas additive? Does that stuff work? Thanks in advance! Ron
If it's running perfect why have them cleaned? Two times a year dump in a can of fuel system cleaner. I have been doing that for years and haven't had any problems.