falling MPG's but not power - Ford Powerstroke Diesel Forum
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post #1 of 29 Old 12-15-2010, 11:12 AM Thread Starter
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falling MPG's but not power

My MPG's are dropping from 18 - 19 down to 15 - 16. I have. When I could go 500+ plus miles per tank, I'm now gettng a little over 400. No black smoke, no long hard starts, just lots of highway driving. This is frustrating as a MF'r, and I'm getting tired of it. I just want to drive this thing and not worry where the next $1000 is going.

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post #2 of 29 Old 12-15-2010, 11:20 AM
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same here. lost almost 3mpg after I changed my fuel filters.

228XXX miles and still goin strong!
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post #3 of 29 Old 12-15-2010, 11:22 AM
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Probably the winter diesel with the anti-gel formula. Sorry man but that's just the way it is for now.
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post #4 of 29 Old 12-15-2010, 11:25 AM
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But I'm in texas and there is not winter! haha

228XXX miles and still goin strong!
2006 King Ranch F350 CC long bed 4x4 -4" straight pipe, SCT with TSD tunes, Coolant filter, Upgraded fuel pres. regulator spring, 4" bds lift, Dieselsite intercooler boot kit, Edge insight CS, Fuel pres gauge.
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post #5 of 29 Old 12-15-2010, 11:34 AM Thread Starter
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Quote:
Originally Posted by obsidian View Post
Probably the winter diesel with the anti-gel formula. Sorry man but that's just the way it is for now.
so the anti-gel would have that big an impact on fuel mileage? Ain't that some shizz

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post #6 of 29 Old 12-15-2010, 11:38 AM
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I wouldn't think that would be my problem. I still had half a tank from the old filters to use after I changed the fuel filters. So Idk why mine is doing it.

228XXX miles and still goin strong!
2006 King Ranch F350 CC long bed 4x4 -4" straight pipe, SCT with TSD tunes, Coolant filter, Upgraded fuel pres. regulator spring, 4" bds lift, Dieselsite intercooler boot kit, Edge insight CS, Fuel pres gauge.
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post #7 of 29 Old 12-15-2010, 11:47 AM Thread Starter
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Nil on the anti gelling. I'm in Knoxville, TN where Pilot is based, jsut called the corporate office, and they say no reason for the drop. I get fuel at the biggest Pilot in town, they move so much fuel through there, there is no reason to have a fueling issue with my fuel "according to Pilot"

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post #8 of 29 Old 12-15-2010, 11:51 AM
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They will prolly not admit its the winter fuel.

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post #9 of 29 Old 12-15-2010, 11:55 AM Thread Starter
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He also stated they don't have a "winter blend", jsut an anti-gelling agent. It's not cold enough here to need "winter blends"

according to him the anti-gelling agent and winter blend are two distinctly different things.

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2004 F250 Super Crew FX4 Powerstroke
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post #10 of 29 Old 12-15-2010, 01:46 PM
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I've read that for the winter they mix Diesel #2 with Diesel #1 at the refinery. don't know the difference between #1 and #2 but that's what I read.

228XXX miles and still goin strong!
2006 King Ranch F350 CC long bed 4x4 -4" straight pipe, SCT with TSD tunes, Coolant filter, Upgraded fuel pres. regulator spring, 4" bds lift, Dieselsite intercooler boot kit, Edge insight CS, Fuel pres gauge.
facebook.com/shawnhaught1
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