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2008 Ford Super Duty

355 messages,  Last post on Nov 13, 2009 at 9:21 AM

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What is this discussion about? Ford F-250 Super Duty, Ford F-350 Super Duty, Truck

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#208 of 355 Re: I want my MPG [jarmentrout] by fordguy7 Mar 10, 2008 (6:28 am)
Replying to: jarmentrout (Mar 06, 2008 10:14 pm) Thanks a lot for the response. It's just helped confirm the way I was leaning. It's taken me a while to get some real world input on the V-10 gas mileage, as so many people go with the diesel or the V-8 gas. The mileage doesn't surprise or scare me. In fact, it's about the same mileage I have I get with my F-250 4 x 4 Crew Cab with 5.4 liter V-8 and 4.10 axle ratio. This confirms what I have been reading, that the V-10 gas mileage is about the same as the V-8 gas mileage because the V-8 motor has to work harder/rev higher just to move the mass of that truck body down the road.   My friend has the 2005 6.0L PS, and says it's a dog compared to the 7.3 liter diesel they had in the older models, so you made a good choice. He tells me his next truck is without a doubt going to be a V-10.
#209 of 355 Re: I want my MPG [albright] by contractnow Mar 14, 2008 (4:02 am)
Replying to: albright (Feb 26, 2008 5:30 am) Hey, I'm new here looking to improve my mpg. I have 2008 F250 and getting 8mpg. Can you help me. I see you used a chip. Where can I get one and how do you put it in? Please tell me anything else I can do. Thanks for any help, I need it.
#210 of 355 My MPG by firecapn Mar 14, 2008 (5:00 am)
Just recvd my new 2008 Ford F350 C/C, PS, L/B 2WD, and with the first tank of fuel averaged 14.1 mpg. I'm half way through the second tank and I'm up to 14.5 mpg. I' looking forward to towing my fifth wheel in early April to see how it performs. Will report after the trip. Replies to this message: olship (Apr 01, 2008 11:35 pm)
#211 of 355 Re: I want my MPG [bkuepaint] by dbweaver Mar 15, 2008 (5:36 pm)
Replying to: bkuepaint (Feb 26, 2008 5:11 am) What kind of chip did you try? What kind of troubles did you have with it? Thanks, David Replies to this message: bkuepaint (Mar 15, 2008 6:28 pm) albright (Mar 17, 2008 7:48 am) tyler11 (Apr 08, 2008 3:43 pm)
#212 of 355 Re: I want my MPG [dbweaver] by bkuepaint Mar 15, 2008 (6:28 pm)
Replying to: dbweaver (Mar 15, 2008 5:36 pm) I used the Hypertech for the 08 Ford F250. What happened was my turbos overheated and shut the motor down. That was the 1st thing. The 2nd thing was it changed my shift points and had the transmission running horrible. I also lost gas mileage
#213 of 355 Re: 6.4 mpg [dbweaver] by contractnow Mar 16, 2008 (6:31 am)
Replying to: dbweaver (Feb 28, 2008 1:15 am) David, how are you getting 13mpg? I also have an 08 I just bought used and I see why. I only get 8mpg. Are you doing anything to get that mileage? Air intake? Chip? I have mixed feelings about both. I'm new to these modifications and don't know anything about them. You sound knowledgeable. Can you or anyone else suggest anything that works without causing problems to my truck. Thanks Gary Replies to this message: dbweaver (Mar 17, 2008 1:03 am)
#214 of 355 MPG Issues by rseebo Mar 16, 2008 (9:01 am)
Guys one thing that you are not mentioning in your topics about MPG's is the new laws that have been enacted by our wonderful government on the new 08 diesel motors along with the revamped diesel fuel modifications itself. This has a direct impact on the MPG's and you will not be able to get the old MPG's of the 07's or later model diesels. I have an 05 and still get 17 - 19 hwy and am very hesitant to upgrade to a newer truck due to the cost of diesel and the lowsy MPG economy along with the routine maintenance having to be performed more frequently. I love the USA but really hate our government right now with all of the BS they are pulling on the fuel...thanks Gore!
#215 of 355 Re: 6.4 mpg [contractnow] by dbweaver Mar 17, 2008 (1:03 am)
Replying to: contractnow (Mar 16, 2008 6:31 am) I haven't done anything except run the crap out of it.I redline 1st and 2nd gear most of the time. I tried to take it easy on a short trip (154miles) Saturday to get good mileage. When I started it Sunday afternoon to go to work it was smoking and idling rough. I assummed it was going through the cleaning cycle. When I left home it would start lurching at around 1750rpm. I don't know what was going on, no check engine light or anything. It done this for 43miles, I stopped and turned the engine off and started it right back up and it was fine I drove another 320 miles with no problems before I shut it off again. I add 8ounces of deiselkleen cetane boost to every other tank. I have a intake coming this week. I'll post the results in a couple of weeks.
#216 of 355 Re: I want my MPG [dbweaver] by albright Mar 17, 2008 (7:48 am)
Replying to: dbweaver (Mar 15, 2008 5:36 pm) I PUT IN THE EDGE CHIP, MY HORSE POWER WENT UP BUT MY FUEL MPG ONLY WENT UP 2 MPG. AT $750.00 IT WILL TAKE A LOT OF FUEL TO RECOVER MY MONEY. SO FAR NOT HAVING ANY PROBLEMS WITH THE CHIP, I HAVE ABOUT 3000 MILE WITH IT IN. Replies to this message: tyler11 (Apr 08, 2008 3:43 pm)
#217 of 355 1999 7.3 by fordisthebest1 Mar 23, 2008 (8:35 pm)
HELLO I HAVE A 1999 F-350 CREWCAB, LONGBOX, 4X4, 3:55, SINGLE WHEEL, 6 IN LIFT and 6IN EXHAUST   I was wondering if anyone has converted to veggie oil yet, I am thinking I might. I was also wondering what chip works the best to improves millage. By the way for all you ford owners out there I average 22.5 on a flat surface driving 58. In town I average 16. I drive alot in the summer with the truck and on 300 mile trip I average 20-21 with out a chip. I have been told that the 6.4 has plastic injectors and the 6.0 block cracks around 130K; my cousin works at a ford dealer. I know alot of people where I live have kept the 7.3 because the 6.0 is shit. If I where to buy a new truck I would get a Dodge, But I love mine to much to ever get rid of it.

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