Need advice for better fuel mileage? - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 08-09-2009, 05:17 AM Thread Starter
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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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post #2 of 7 Old 08-09-2009, 10:54 AM
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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.

'00 F350 Supercrewzer Lariet, PSD, Auto, 3.73, CC, 4x4, SWB, SRW, 6-pos Chip, 6637 filter, 4-inch turbo back exhaust, Garrett 38r w/ high flow outlet, ITP overboost eliminator, AIH delete, Adrenaline HPOP, BTS Trans, Swamps IDM, In-tank & Pre-Pump mod, Heater Valve mod, X-car Sound Pannel mod, Train Horns / Packages: Trailer Tow, Camper, Off-Road. Overhead monitor DVD/TV/VCR (VCR under rear seat w/ 6 CD changer)
www.employees.org/~calridng (Offroad riding in California)
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post #3 of 7 Old 08-10-2009, 06:54 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

Just a basic 01 F350 CCLB SRW -Good from a far but far from good
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post #4 of 7 Old 08-10-2009, 11:59 AM
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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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post #5 of 7 Old 08-10-2009, 12:58 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)

F250 sold.
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post #6 of 7 Old 08-17-2009, 01:14 PM Thread Starter
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Appreciate all the advice. Thanks guys!!!

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post #7 of 7 Old 08-17-2009, 01:33 PM
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whats your gears?

70 for me is dead on 2k rpms

2006 Ford F250 CCSB FX4 6.0




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1999 F350 CCLB 4WD 7.3
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