This is purely anecdotal, but a can of Techron concentrate to clean out the injectors usually does my gas mileage good. Yeah, it costs around $12, but given gas prices these days, it'll be made up quickly.
Po
Po
1995 Mercury Mystique GS: Zetec 2.0L I-4, CD4E
1978 Ford Thunderbird Town Landau: 351M (5.8L V-8), FMX
Coming in 2007 -- 1986 Jaguar XJ12 Sovereign: 5.3L High-Efficiency V-12, GM transmission
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