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  1. Radical drop in fuel mileage

    Nissan Titan XD Defects, Issues And Problems
    My Titan XD diesel now has 17,000 miles on it. 4 or 5 times or about once every 2,000 to 3,000 miles for about 40 miles my fuel mileage drops to less than 10 mpg, even going down hill empty and not towing. Does this have something to do with the emissions control? I also had my truck parked for...
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