Hello I just recieved my new '05 F350 4x4 drw V-10 6spd last week. It replaced a '02 f350 with the same specs except for the drw option. On my '02 I could average 10.6 mpg all day no matter how I drove or what I pulled. This new V-10's first tankfull averaged 7.4 mpg The current tankful is below half and I have only been 100 miles. I will say that the current tankful is probably due to the injector mailfunction I had. But still this motor should get at least 9mpg out of the box should'nt it? I looked through my manual to try and find reccomended break in but I had no luck. I was wondering what anybod else is getting for milage with there 2005 V-10's and how many miles do you have on them?

 

labwillow

What the hell is an injector malfunction you had? Within first two tanks of new! That is interesting tell us more.

So ignoring that weird tidbit let me take a stab as if your new V10 was not screwed with by the dealer.

4X4 F350 V10 6 speed with 4.30:1 LS and I will guess that it is LB and CrewCab. So we have a 7800-8100lb truck with the lowest factory gears, a hand shaker 6 speed, and the new 3valve V10 with 362HP and 455Ftlbs Torque.

Like I said you already answered your question if the motor is sick from the get go.

But with what you posted so far, I suspect the low milage might have someting to do with BSEG rabbit starts running the gears past 3000 during every shift. In fact I bet your BSEG gets bigger and bigger every time a Chevy or Dodge truck is at the light with you!

Any way, that is why my 8100lb F350 KR CC LB 4x4 3v V10 4.30:1 gets less than 10mpg most of the time... that damned BSEG (Big S--- Eating Grin) is contageous!

Seriously brother, sounds like something is wrong... If I drive reasonable I get 10.5 to 11.4mpg mixed and have under 6000 miles so I still do not think it is fully broken in yet. I fully expect to get in the 12s when she loosens up some.

The Owners manual does have a break in section, pretty vague info though. Every body has an opposing oppinion on how to, so just search this forum for lots of break in info.

Like I said every body has opinions here is mine...

Do Not spend any time lugging below 1800rpm and high torque load. Do not spend any time high rpm above 3800 with no torque loads. Change the oil at 500, 1000, and start your normal service schedule after the 1500mile oil change. Yes I change every 500 miles for the first three changes. Overkill maybe, but dealer pays for my first three on every new Ford I get from them so is costs me nothing and they don't care how fast I use up the freebies!

 

According to the manual, break-in before using cruise is 500 miles, 1000 before towing. I don't know if/when mileage starts to get better. My new '05 has averaged 9, 10, and 9.5 on it's first three tanks (all city driving). It's been cold and the gas is oxygenated in this area.

I've heard people say their mileage got better at anywhere from 5K to 20K miles.

 

Well labwillow

Now that I just read your post in the SuperDuty forum I am a little ticked that you did not add all the tidbits about the dump body, the excessive smoke and weird fault codes the dealer claims is the problem.

I suspect whoever added the dump body hosed your wireing or someting like the SEIC (Stationary Elevated Idle Control). Is it PTO driven?

A. Trucks delivered from Ford are all tested on a dyno at end of production line.. they get 13 gallons of good fuel... most dealers top it off fuel as a predelivery function and some charge some don't.

B. I know a LOT about how modern electronic motors run and I do not believe a "drop" of water in an injector will cause EXCESSIVE fuel usage or blue white smoke. Sure hope you checked the oil and sniffed for gas in the oil.

C. Something terribly wrong and you need to be standing on dealers head until you get it straight.

D. I still suspect dump add on is the cause of your grief.

When your gonna double post it would be nice to include all the pertinant facts.

 

Where did you here that the trucks went on a dyno? I have been to the truck plant, they don't take the time or care, they fire them up and park them out in the big oll parking lot.

 

A long detailed post/article on the diesel site where a customer got to go watch his truck being built. And I saw a video a few years ago of the last station where they run in the computer, ABS, and check all the systems. Looked like a standard station and final systems check from the write up and flicks. If this is BS do tell or is this a one out of so many test?

 

Exactly, or else mostly every dealer wouldn't be able to sell any used cars, since they all have a habbit of steam cleaning the engines (even though you're not supposed to). If engines were that frail, we would drive them in the rain.

 

Sorry about the lack of info.When I posted in the superduty forum I was ****ed at my truck and I had to get it out. My truck is a short wheelbase (60" cab to axle)dual wheel regular cab 4x4 4.30 LS 6 spd V-10 w/ 9'4" platform dump with a elec over hyd hoist. Empty weight including me is 9620lbs. I recieved truck back from the dealer friday and it has been fine since. The dealer filled it up for me today to help compinsate for the previous malfunctions. I have not run the mpg numbers yet but it took 20 gallons to fill it up and I went 127 miles. I also hav to add that in the last 5 days the highest daily temp. was 10 degrees which means extended idleing and everyone knows that does not help the gas gauge.I have not had the BSEG sindrone with this one yet. I always had the BSEG problem with my old V10 srw. I noticed that this truck has more power when you lug it down compared to my old one. I have also crossed the 3800 rpm line a few times to give the engine a varied break in.

 

i,v beat this mpg thing to death with my dealer "town west ford" Texas v-10 430 350 cc single wheel auto.. 8.9 mpg is THE best i'v got from day 1. I did the slow starts, no air, turned it off and rolled down hill ha ha and with 9,900.00 miles any way you count it,it still only gets 8.9!mpg don't know what everybody else does to get 10,11,12,13,14,mpg except pull it maybe.it has the power but 8.9 s#*ks!!

 

Yah, Fred, Ford does test one out of so many trucks that comes down the line, I can't remember the number, we will say every 500th truck or so, these trucks don't see a dyno, but instead they get a 3 mile drive and a check down, these trucks that get the test also get a decal saying that it was a tested truck, I have seen probally two trucks that have come to the dealer with these stickers (I have spent a lot of timer at the dealer) Ford does have the standerd test for every truck as it leaves the line, a fit and finish test, and not a very good one at that, if you want something that they really care about you are going to have to get a Honda or a Toyota, now those have a good fit and finish, sad I know...

 

My 99 F350 PSD was one of the lucky trucks to get the p**sed tested out of it before it left the Factory. That was a great truck, I can only keep my fingers crossed that my '05 F350 V10 gets the same testing.

 

With my 04' F-350, XLT, SC, V-10, 6-speed, 4:30 LS,DRW, My best calculated mileage so far has been 11.2 mpg, some mixed driving, average with it around town is 10 mpg, when we went to Nova Scotia, this past summer, truck was loaded and pulling a 23' camper, it averaged 8.75 to 9.75 mpg, and we were hauling the freight to,,, .

Last night I plowed for 6 hrs with it, pushing a 9' Fisher plow, and used 1/4 of a tank of gas, my previous PSD trucks would use the same amount . I really like this truck, .
Later,,,,,,,,,Mark

 

I used to work on the EOL test system at the plants. The auto companies are required to prove to the government that the vehicles pass emissions as they leave the plant. Every vehicle manufactured for the US market has to pass emissions before being sold.

Many OEMs (Ford included) take the opportunity to test all of the vehicle at EOL (End-Of-Line) before shipping. The one Ford uses tests every possible system on the vehicle (via the diagnostic network connector under the dash and the dyno). The dyno is also used to test 4x4, and the ABS. You can see the system if you're in the Detroit area and go to The Henry Ford Museum's Rouge Plant Factory tour (thehenryford period org).

 

My '00 5.4 gets 6mpg plowing snow all night and 12mpg on the best of days on the highway all day. I am guessing my next truck (V-10) will get the same.

 

JamieMueller
The info I had suggests this EOL test to be true and I still think it is prudent and necessary test. I did not save the file but a couple of years ago I had a video of the final "inspection bay" and it sure looked to me like it was briefly on a dyno. The customer taking delivery at KTP seemed to imply that every truck got this "final test" also. Also the custome observation seems to go into some detail about the reason for this EOL test just as you state... to certify emmissions, ABS and check all electronics.

Dunno... seems logical to me