Fuel Mileage - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 53 (permalink) Old 04-05-2007, 02:06 PM Thread Starter
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Fuel Mileage

Does anyone have over 5000 miles and knows what there fuel mileage is driving about 55 or 60 with the cruise set? What kind of gears are you running? Automatic or Standard Transmission? 4X4?

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post #2 of 53 (permalink) Old 04-05-2007, 02:20 PM
 
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I Have 2200 Miles On My 08 6.4 4x4 With 3.73 Gears. I Get Around 11.1 Around Town And 12.4 On The Highway. I Get 12.4 On The Highway At 75 Mph. When Stay Around 65 It Will Jump Up To Aroung 15 Or 16 Mpg. HOW IS YOUR FUEL MILEAGE AND HOW MANY MILES DO YOU HAVE?
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post #3 of 53 (permalink) Old 04-05-2007, 05:16 PM Thread Starter
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I'm a Ford man, but I can't decide weather to go with the new fords or the cummins in the dodge. Or maybe just wait another year to see how the new 6.4 s are holding up. I drive 40 miles one way to work 5 days a week, so fuel mileage will be a factor.
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post #4 of 53 (permalink) Old 04-05-2007, 05:37 PM
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Quote:
Originally Posted by fjo
I drive 40 miles one way to work 5 days a week, so fuel mileage will be a factor.
I would stay away from a truck and get a volkswagen tdi then:Thumbup:

-ADAM-

2008 Ford F-350 King Ranch, 4x4, 6.4L, Powerstroke Diesel, Torqueshift, Spartan Tuned, 4in FloPro Straight Duals, Afe Stg 2 Intake, Chromed & Tinted out!!! 115k Miles!
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post #5 of 53 (permalink) Old 04-05-2007, 08:30 PM
 
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Originally Posted by Hybrid_4x4_Superduty
I would stay away from a truck and get a volkswagen tdi then:Thumbup:
No...FORD needs to get their crap together. They change Diesel engines like I change socks. Why is the 6.4 at a lower compression rate than the 6.0? Don't get me wrong...I drove a 08 Super Duty....Great truck...Awesome interior....with a FUEL SUCKING engine...I don't get it...No wonder Ford is losing stock.:shrug:
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post #6 of 53 (permalink) Old 04-05-2007, 08:33 PM
 
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Quote:
Originally Posted by fjo
I'm a Ford man, but I can't decide weather to go with the new fords or the cummins in the dodge. Or maybe just wait another year to see how the new 6.4 s are holding up. I drive 40 miles one way to work 5 days a week, so fuel mileage will be a factor.
I am waiting on 6.7 fuel economy #s to come out before I decide. I LOVE the 08 Super Duty...but I trust the Cummins a heck-a-va lot more than the Powerstroke....
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post #7 of 53 (permalink) Old 04-05-2007, 08:40 PM
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Quote:
Originally Posted by Hybrid_4x4_Superduty
I would stay away from a truck and get a volkswagen tdi then:Thumbup:
I mean that with all due respect, if you are worried about fuel economy after buying a $50k+ truck mabye you shouldnt get one? And i mean all that with ALL due respect.

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2008 Ford F-350 King Ranch, 4x4, 6.4L, Powerstroke Diesel, Torqueshift, Spartan Tuned, 4in FloPro Straight Duals, Afe Stg 2 Intake, Chromed & Tinted out!!! 115k Miles!
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post #8 of 53 (permalink) Old 04-05-2007, 08:52 PM
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To answer the question of thy did ford lower the comp ratio like that is a bad thing, The lower the comp the more boost can be run with less fatigue on the engine. Lower comp in a diesel is not a bad thing. In the world of high perf diesels you always cut the comp, not raise it like a gasser. The lower the better as long as it starts when its cold.
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post #9 of 53 (permalink) Old 04-05-2007, 09:13 PM
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Quote:
Originally Posted by DieselLover
No...FORD needs to get their crap together. They change Diesel engines like I change socks. Why is the 6.4 at a lower compression rate than the 6.0? Don't get me wrong...I drove a 08 Super Duty....Great truck...Awesome interior....with a FUEL SUCKING engine...I don't get it...No wonder Ford is losing stock.:shrug:
Give it about 10,000 miles to break-in and you'll see your fuel economy increase. It takes time, but it'll get better (I hope). My new DMAX gets 12.9 in pure stop & go driving on winter blend, not what I expected. I'm hoping it's up over 15-16 MPG by mid summer. I bought my wife a new Volvo XC90 V-8 about 4 months ago and the fuel mileage went from a miserable 13.5 up to 16.5 after 3,500 miles of driving-pure short trips and stop/go. No highway at all.
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post #10 of 53 (permalink) Old 04-05-2007, 10:32 PM
 
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Quote:
Originally Posted by deere puller
To answer the question of thy did ford lower the comp ratio like that is a bad thing, The lower the comp the more boost can be run with less fatigue on the engine. Lower comp in a diesel is not a bad thing. In the world of high perf diesels you always cut the comp, not raise it like a gasser. The lower the better as long as it starts when its cold.
\

Wear is what lowers the comp on an engine...Ford lowered it by 300 which is 300 closer to an overhaul. Then they compensated by adding twin turbo's which don't cut in until the rpm kick in...It appears that the 6.4 is a lowered compression twin turbo'ed 6.0....disappointing...
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