Fuel Mileage Drop? - Ford Powerstroke Diesel Forum

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post #1 of 27 Old 02-12-2010, 07:07 PM Thread Starter
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Angry Fuel Mileage Drop?

It's been way down since the HG install. Could the winter blend cause a 100 mile loss a tank? Seems extreme.

I have no signs of a leak. The oil doesnt smell of fuel. I havent seen any spots in the driveway or anything.

The fuel filers are 8K old and are getting replaced this weekend.

Thoughts?

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post #2 of 27 Old 02-12-2010, 07:08 PM
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It's been cold, have you been letting it idle a lot?

'06 F-250 SuperCab 4x4 SRW
Magnaflow Series Turbo Back
SCT X3 - Truck Source Diesel Tune



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post #3 of 27 Old 02-12-2010, 07:10 PM Thread Starter
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No excessive idling...

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post #4 of 27 Old 02-12-2010, 07:10 PM
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Did your set it back to stock and then reload the tune after the HG's? Some times it takes a while for the tune to settle back in. I had the same issue last time I changed tunes and it was right around 100 miles per tank loss.

2008 F-250 FX4

Procomp 6" lift, MX6 Shocks
38/15.50/20 DC FCII
20" Black XD Hoss
SCT Livewire W/RCD 485 & 585
4" Flo-Pro Down Pipe
5" Flo-Pro Turbo back Exhaust
S&B CAI

I read that Haiti is without a Government. To help out, I am donating an Obama, Pelosi, Reid, Frank, Coakley, and two Clintons.

They may keep them. I'd give them a Constitution, but mine's missing!
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post #5 of 27 Old 02-12-2010, 07:11 PM Thread Starter
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I've gone through several tanks of fuel since then. I've played around with several tunes too.

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post #6 of 27 Old 02-12-2010, 07:12 PM
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IDK maybe just let it run through a couple tanks. If it keeps up you might just have yourself a problem

'06 F-250 SuperCab 4x4 SRW
Magnaflow Series Turbo Back
SCT X3 - Truck Source Diesel Tune



You can call me Matt.

"As an American I am not so shocked that Obama was given
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post #7 of 27 Old 02-12-2010, 07:13 PM
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Nevermind your a little quicker on the draw then me.

'06 F-250 SuperCab 4x4 SRW
Magnaflow Series Turbo Back
SCT X3 - Truck Source Diesel Tune



You can call me Matt.

"As an American I am not so shocked that Obama was given
the Nobel Peace Prize without any accomplishments to his
name, America gave him the White House based on
the same credentials."

-Newt Gingrich
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post #8 of 27 Old 02-12-2010, 07:15 PM
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Quote:
Originally Posted by Jesse@MBRP View Post
I've gone through several tanks of fuel since then. I've played around with several tunes too.
It takes a couple of tanks, and your having to start all over again everytime you change the tune. Its very annoying and I dont know why it takes so long to relearn but it does.

2008 F-250 FX4

Procomp 6" lift, MX6 Shocks
38/15.50/20 DC FCII
20" Black XD Hoss
SCT Livewire W/RCD 485 & 585
4" Flo-Pro Down Pipe
5" Flo-Pro Turbo back Exhaust
S&B CAI

I read that Haiti is without a Government. To help out, I am donating an Obama, Pelosi, Reid, Frank, Coakley, and two Clintons.

They may keep them. I'd give them a Constitution, but mine's missing!
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post #9 of 27 Old 02-12-2010, 07:15 PM Thread Starter
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I mean, it doesn't seem out of this world to believe that the Winter Blend could cause 3mpg drop but I would have thought it would have happened a little quicker than Jan.

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post #10 of 27 Old 02-12-2010, 07:22 PM
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It could be the fuel but I didnt notice that big of a drop with winter fuel only when I changed tunes.

2008 F-250 FX4

Procomp 6" lift, MX6 Shocks
38/15.50/20 DC FCII
20" Black XD Hoss
SCT Livewire W/RCD 485 & 585
4" Flo-Pro Down Pipe
5" Flo-Pro Turbo back Exhaust
S&B CAI

I read that Haiti is without a Government. To help out, I am donating an Obama, Pelosi, Reid, Frank, Coakley, and two Clintons.

They may keep them. I'd give them a Constitution, but mine's missing!
SANDSAILOR is offline  
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