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2008 Ford Super Duty

354 messages,  Last post on Nov 10, 2009 at 11:58 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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#214 of 354 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 354 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 354 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 354 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.
#218 of 354 08 mpg by dbweaver Mar 25, 2008 (6:09 pm)
I installed a S&D cold air intake Saturday. I towed a 5,000 lb trailer from Williamsburg, Ky. to North Myrtle Beach, SC on Monday. I averaged 12.8 mpg over the 518 miles. I normally average 13mpg without the trailer. I can't tell any difference in power but it definetly helped my fuel mileage.
#219 of 354 F250 08 Milage by flingwing Mar 28, 2008 (5:51 pm)
My 1999 F250 6-speed manual 2-wheel drive got 21+ MPG over 195000 miles. My New 08 F250 5-speed 4X4 auto gets about 16+ MPG (loads only 1000+ so far). I thought I had a problem until I read all the comments about what everybody else is getting. Note, I drive about 50% city and 50% Hy. When I did a trip to Calif. in Dec, E. TX I-10,80 MPH got me 15+ MPG. I guess I would like to look into this cold air intake but in Austin TX, it is not cold that much.
#220 of 354 Re: My MPG [firecapn] by olship Apr 01, 2008 (11:35 pm)
Replying to: firecapn (Mar 14, 2008 5:00 am) Yes i just got my new 2008 Ford 250, extended cabe crew 4 door and drove it a total of five hunderd miles on a long trip. Gas mileage came out to be 15.2 at 65 mph. I waiting to see what my milage is with my travel trailer being pulled.
#221 of 354 Re: I want my MPG [albright] by tyler11 Apr 08, 2008 (3:43 pm)
Replying to: albright (Mar 17, 2008 7:48 am) you are saving about $25.00 per tank at 4 dollars per gallon
#222 of 354 08 mpg by dbweaver May 19, 2008 (2:21 pm)
I just checked my mileage today and I'm up to 14.7mpg. some city, some highway, some towing. I was impressed compared the last few times I checked it! I now have 23000 miles on my truck.
#223 of 354 latest mileage results 08 by diehardford May 19, 2008 (4:29 pm)
Trip results two weekends ago from Rock Hill to Myrtle Beach mostly highway running between 60 and 65 arriving midnight light traffic 18.5 solo. Trip home same route leaving late afternoon heavy traffic 17.3 mpg. Last weekend Rock Hill to Sanford NC Mixed highway and city 55 to 60 mph 18.2 mpg solo. Truck now has 20000 miles on it. Had oil and fuel filters changed at 18500 miles. Mileage seamed to improve about 1 mpg after this. This was at dealership using ford products. Don;t know if increase was due to service or summer grade fuels. Replies to this message: rcuellar26 (Oct 05, 2008 7:56 am) diehardford (Oct 06, 2008 6:55 pm) 2scoobys (Jan 09, 2009 7:39 am)

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