Lets see who gets the best fuel economy with their v10 and what mods you've used. I get 10-12
1999 E350 6.8l 313,080 bone stock

 

Hardware "mods" do not improve fuel economy, they reduce it.

 

V10 = Chitty Milage
Why does anyone buy a V10 then worry about MPG?

 

Exactly!

I do keep track of mine though. Just one of those things. Mainly to see how different driving styles, different towing weights, etc, affect mpg.

 

Indeed, who cares?

 

I care what mileage I'm getting. The mpgs can be an indicator of an engine that's not operating correctly.

In my '99 Supercab long bed 2wd, I generally get 13-14 mpg in town commuting and 14-15 mpg on long highway drives. I rarely exceed the speed limit and try to keep rpms under 2K as much as possible.

 

Comprendo amigo! I thought you were interested in mods that helped out the V10 mpgs. I've never looked to be honest, like you say, keep it tuned and Cops firing; she'll run 11-13 mpg's until the main bearings head south.

 

7-10 MPG in my daily driving but i only drive it about 9-11k miles a year depending on the year.

 

I usually get 12-14 almost 300,000
Then towing it's 8-10
The dealer has an injector service and when I get that done, It goes up to 17 for a while and then goes back to normal.

 

6.8l 210k still getting 14-16 on highway....but now that this CEL is on its really crappy.

 

Check your PCV elbow at the throttle body. Throws a CEL saying both banks lean. The elbow rots out and causes a vacuum leak. Cheap to replace.

 

I'm on my 3rd v10 used. The first was an 02 stock the 2nd was an 05 w/K&N cai, the 3rd is an 08 stock. All 3 got about 10.5 city stop and go short hauls. On the highway the 08 gets a best of about 15.5. When people ask me about what she gets- I tell them politely I didn't buy it for fuel economy. By the way I put over 300k on the first 2. Love this engine 1

 

Well, unlike everyone else in the thread, I did buy mine for fuel economy, over a 460. I needed a truck that could do everything my old diesels could, but alot cheaper upfront cost. Add in approx. 6k miles per year, and it was a no brainer. Now, I wanted to save as much money as possible over those miles, so I chose the V10. Alot of family members have had 460s, pretty much 9 mpg across the board. My 6.8 gets about 9.5 loaded to 20k gcw, and 13 unladen. By the way, thats with a canned 93 octane SCT Tune, single 3" exhaust with Dynomax VT muffler, and 3.73 gears. Don't even try telling me the truck is overloaded with those gears either.

I paid half of what a comparable diesel was, and roughly the same as what a clean, similar mileage 460 crew cab cost, and feel I'm way ahead still 3 years later.

If a guy uses his truck as a truck, or to make money, mpg should always be a consideration imo. More for your bottom line if you keep the thing running efficiently. Now if its just a pavement queen to beat on or burn tires off, then mpg be damned, since nothing you do will improve it.

 

I'm always annoyed when the first thing people say to me after telling them I have a V10 is "those things use a lot of gas". No sh#t huh? As if I never thought of that before I purchased an 8000lb truck with 10 cylinders. Then comes the tiresome explanation that I don't drive a whole lot of miles and I didn't need a $50k diesel to pull a camper a half dozen time a year, blah blah blah. And still it doesn't sink into their head.

 

Who cares what they think; Sammy knew.