Been getting crappy mileage in my 03 4x4 Cali truck since new. Almost always around 13 city/16 hwy. Changed my fuel filter at the dealer at 12k and mileage went up to 14/20 mpg for a few days and power was greatly improved. Gradually mileage went back down and after about 1 week was down to 15/17mpg. Now at 16k mileage is 11/13mpg . Changed my fuel filter myself today. There is sediment (sp) in the bottom of the filter bowl and the filter is charcoal black/grey with white spots all over. Reset the computer and did a 10 mile stop and go around the lake and mileage is 14mpg (city), that is good because I live in the mountains. I will try a long freeway run next week and see what it goes up to. But it seems very obvious that I am getting better performance and mileage after I change my fuel filter. I am pretty sure I got a bad tank of fuel when new or possibly from the dealer and now there is crap in my tank. I picked it up with 100 miles on the ODO.

Anybody have a similar experience or any suggestions before I go to the dealer and get reamed $$ to clean out the tank?

Thanks,

GT

 

If this is true I would think it could bring in dirt,dust etc

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