Need advice for better fuel mileage? - Ford Powerstroke Diesel Forum
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  #1  
Old 08-09-2009, 06:17 AM
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Need advice for better fuel mileage?

I average 14.88 in the city and last weekend went down to the coast and only got 15.88? I never drove faster than 70MPH, use Diesel Kleen(Grey) with every fill-up, have done the DIY mod and cut out muffler and have a stock 3.5 inch straight pipe. Any suggestions?
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Old 08-09-2009, 11:54 AM
dmd dmd is offline
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Well... Slow down is the best milage maker. Additives usually just quiet things
down and dont help milage. 65MPH max will get you 1.5-2 mpg.

You will never recover the cost with milage, but here is my list for you. (in order)

- In tank and pre-pump mod, that helped cure my air leaks
- Remove the intake air heater
- Chip with econo setting (get a custom chip)
- If you tow you will need a WW or a intake housing to eliminate surge with a load.
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Old 08-10-2009, 07:54 AM
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That sounds about right. Slow down to about 1800 rpm and you will pick up a little. all my chip did was add power and my MPGs stayed the same. I like it
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Old 08-10-2009, 12:59 PM
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None of the fuel additives have ever given me a mpg incress. TW chip will. 1-2 with your other mods.
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Old 08-10-2009, 01:58 PM
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Though not recently updated, my thread will give you an idea. I'm averaging 20+ every fill up (before CNG).

Real World Fuel Economy (not for lead foots)
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Old 08-17-2009, 02:14 PM
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Appreciate all the advice. Thanks guys!!!
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  #7  
Old 08-17-2009, 02:33 PM
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whats your gears?

70 for me is dead on 2k rpms
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