Today my family and I drove 2 hours to Knoebles in Elysburg Pa. We decided to take the excursion since it had more room and rides better than the jeep. I wasn't sure what to expect as far as mpg since I usually have 9000+ behind it. So I filled her up before we left with some reg. gas and headed up the road. 110 miles later my gauge is just off the full mark. Headed home about 8 hours later. A few more steep hills than on the way up, but 200+ miles on the trip and the needle was at 3/4 tank. I won't know for sure until I top her off but this is what I have found. At half tank it is exactly 20 gal to fill her up. At 1/4 tank it is exactly 30 gal to fill her up. So if each 1/4 is 10 gal and about 4 gal to spare when the fuel light goes on, at 3/4 I should have used 10 gal. That means I just got 20 mpg with my v10. I'm happy with that. my ex was very happy with all her temps and I think she enjoyed the run without the extra weight behind her.

 

i hate to burst a bubble but, wait till you fill up and add the numbers up. the most realistic number i've seen/heard for a V10 excursion on the highway is 15mpg. i personally have hit 14.1 as a best.

 

I thought you were going to say that you found some miracle product ( bolt on or otherwise) to achieve this. Please update us whenyou do fill up and calculate the actual mpg. I am hoping you did it , but i am skeptical too.

Do you have the 5-star tune? Just curious.....

Karl

 

No 5 star. I kept the heavy foot off and tried to keep her under 70. I really doubt I got 20 but if it was all flat and highway I know I could do it. Just some of the city running after the trip ran the needle down to 5/8 of a tank. Probably won't fill her up for a week or so. Next tip is camping. I'll keep you posted.

 

Gas needle is f'd up

Not even my PSD could do that. Would be nice though if she could


I saw that title and thought you were hawkin' Brown Water

 

Don't you have a 'mpg meter' on the ceiling console?

 

Sorry bro, aint gonna happen and it didn't happen. Not to be mean but I wouldn't believe you even if you said you hand calculated it, which you didn't even do, you just guessed.

The fuel gauge is an estimator and very far from a precise tool.

Stewart

 

I'll post back when I fill her up in a week or so. I hope the gauge isn't messed up, never was before. The mpg meter lie- o- meter up top said 18-22 at most times. Like I said I know it won't be exactly 20 since I did some city driving in the trip. Usualy if I am pulling I get 200 miles out of a half tank and it takes 20 gal. when at 1/2 To fill up. That's 10 mpg when pulling. This trip I had 200 miles at 1/4 tank. Just saying. Believe it or not it happened.

 

I believe it. Surprised for the V-10, but glad to hear it! I can get those numbers with my 7.3, and when towing I fell down to 18 MPG, heavy towing with hills 16 MPG, but having the V-10 get that, that makes me happy. Good job!

 

Best I ever got was 16.2 but that was followig a t/t . normal 15 hwy 10 city but if it was close to 20 congrats

 

I believe the X gas tank is 44 gallons. The way I look at it is that each 1/4 is 10 gallons, as you posted, and then the remaining 4 gallons are split 2 gallons above full (my X shows past full on the gauge when it's actually full), and 2 gallons below the empty mark. So by my reckoning, when at the 3/4 mark, you have probably actually used 10 + 2 = 12 gallons, if you topped off completely at the start of your trip.

Also, while my X is heavily modified (8" lift, 37" offroad tires, 4.56 gears, 4x4, roof rack with bulky stuff up top), it's the 7.3 diesel & I get 12-13 mpg highway real world hand calculated results (i.e. not reading off the lie-o-meter), so you'll forgive me if, like several others, I'm somewhat skeptical if you claim 20 mpg for the V10, even if it's stock height & 2WD, rather than 4WD, which obviously helps a lot.

I am hoping to pick up a couple of highway mpg (if I could get closer to 15 mpg I'd be happy) on my 7.3L PSD by doing some basic maintenance e.g. new sensors, changing to synthetic fluids, econo tune etc., maybe even a custom easily removable front air dam for long trips, but given my particular X's mods, which suit my requirements, I know my X will likely never be a fuel sipper, which is okay as I knew that going in, and I don't know of any other vehicle that fits my particular requirements and gets better mpg (well, maybe a custom Cummins 5.9L common rail diesel in an Excursion or older straight axle Suburban, but you can buy a lot of diesel with what a custom conversion like that would cost).

 

Yeah, no way in hell did you get 20mpg. Fill the tank up all the way. Drive. Fill again. Calculate miles divided by gallons, and that's your mileage.

 

I don't see it either, especially with a 4.30 rear.

 

Yep, all Excursion tanks are spec'd at 44.

With that said, I've put just a hair under 48 gallons of fuel in mine before.

It all depends on how empty your are when you fill it, and how high you fill it.

Stewart

 

Things that are imaginary:

1.

2.

3.

4. A V10 that gets 20mpg.