2012 6.7 improving fuel economy without voiding the warranty - Diesel Forum - TheDieselStop.com
6.7L Upgrades and Aftermarket - Engine Upgrading or adding OEM or aftermarket equipment to your 2011-Up Super Duty truck with 6.7L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.7L Power Stroke engine.

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post #1 of 4 (permalink) Old 06-10-2012, 12:57 PM Thread Starter
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Question 2012 6.7 improving fuel economy without voiding the warranty

Ok, this is my very first diesel and I love it, but how can I improve fuel economy without voiding my warranty. I realize driving habits, properly inflated tires etc all help, but are there other more substantial ways to improve my fuel economy?

I apologize in advance if this topic has been addressed. If so, please keep the insults to a minimum and provide me with a link to those posts.

Thanks for taking time to read/answer my post!

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post #2 of 4 (permalink) Old 06-10-2012, 01:20 PM
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The team that drove 2400 miles with 5 people and 1,000lbs of gear got an avg of like 24-25 mpg over the whole trip. 17" wheels/tires ( lighter the better), I think kept it 1-1200 RPMs, slow, smooth starts, coasting, drafting, etc.

Not much else to do without worrying about warranty that I know of.

I can get 18 or do on a long trip, I got 15 mpg avg over 25,000 miles on my 2011, sounds good to me. That's better than any other full size truck out there, or any SUV.

And yeah, if you search the site, it's been talked about before. I spend $400-700 a month on fuel, just part of driving a big truck.

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post #3 of 4 (permalink) Old 06-10-2012, 03:07 PM
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About the only way I know of to improve mileage w/o voiding the warranty is to adjust the pressure on the go pedal.

Keeping it in the right RPM range is a huge help. If you have the indash display, you can monitor the mileage under different conditions and drive to stay in the sweet spot.

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Mods: Silver Star Ultra bulbs, M&S Mini-Maxx, MBRP "Race" Exhaust

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post #4 of 4 (permalink) Old 06-10-2012, 03:16 PM
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Keep your warranty intact? Don't mod it at all. Then again, all too many found out that FoMoCo isn't necessary standing behind them anyway.
To keep your warranty, no mods to engine.

Some dealers are turning a blind eye to mild mods like tuners and exhausts. Some do not.

For tuners, you'll probably hear H&S Minimax as being the most popular.
Though Spartan has it's following too.

There's a tuner out there called KEM which does on-road tunes to the tune of 500rwhp with all your stock stuff in place as a tune for the H&S. Common sense says that deleting all that emissions stuff and restriction would yield more power, but KEM claims similar power w/o deleting.

However, using these is like issuing yourself a $20k insurance policy. That motor pukes, you may pay yourself.

If and when I decide to play, I'll likely go with the Minimax and KEM.

2012 F350, 6.7L Diesel, 4x4, SRW, Quad Cab, Short Box, Loaded, Ingot Silver

Last edited by TrickTruck; 06-10-2012 at 03:22 PM.
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