The Verdic is in, New Ford 7.3 V-8 Gas mpg not so Great

Bionic Man wrote:
Sometimes I just shake my head on these. I know there is no perfect test, but you should at least test under the same conditions. Which they didn't. They mention a couple times on the video that they were fighting the wind when they were with trailer in the Ford.

Also, I'm not sure they are even using the same test track. The towing test are on I76 east. That non-towing trip with the Ford wasn't on that stretch of road - it is on the diagonal from Longmont to Boulder - not an interstate, there is more traffic and stop lights. Is that the same road they used for the unloaded Chevy test?

Not defending the 7.3 blindly, but we really need to get some real-world test results before anyone makes a judgment, good or bad, about the MPG of the 7.3.

Hold on now...don't let the facts get in the way of a good story. :B

That FLT guy should go back to Berwyn and reopen his Bohemian restaurant. Roast pork and dumplings, yum.

noteven wrote:
7.3 V8 gudzilla EcoBoost 600hp!!

Hell, in the Ford GT they get 640hp from the 3.5.

timmac wrote:


Yes it is a fast mpg test and not a long run test but it does show that the 7.3 is still a gas hog, even if it was a better day and driving longer still appears it wont break the 7 mpg range.

I have 16-25 MPG towing my trailer. Does it means my engine more efficient? No. It means my trailer is small.

With gas engines we are talking about 0.1..5% difference in efficiency, not 20..100% difference in loads. To find which engine is better should be pure "scientific" comparison, otherwise it is wind, speed and other 10+ factors.

Bird Freak wrote:
Think I will wait for real world results for a average from owners.
These guys are a joke to me.
Real results from owners will give a good average mpg.

X2. These 'tests' are usually a waste of time. The true MPG will come from real owners using the trucks daily for a variety of tasks.

Google:

BSFC: Brake Specific Fuel Consumption

Carnot Efficiency Cycle

These are the two main fundamental engineering terms (there are more) which MUST be improved before you can expect to see any significant improvements in overall MPG. As far as I can tell, the new V8 makes no attempt to improve these over the V10. Although it has less moving parts, it has more cubic inches than the V10 so unless there are improvements in efficiency, expect no better MPG. A direct drive transmission is most efficient, adding gears adds drag which beyond a certain point will reduce fuel mileage since it adds complexity. IMO, the new V8 is about cost saving, not fuel saving.

Chum lee

We get better with our 2000 Monaco V10, wow.

Think I will wait for real world results for a average from owners.
These guys are a joke to me.
Real results from owners will give a good average mpg.

lisolar wrote:

timmac wrote:
5.5 to 6.1 mpg while pulling a load, looks like the new 7.3 V-8 gets about the same mpg as the 6.8 V10..

Different motor same mpg, looks like the gas motorhomes are still stuck with bad mpg..


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:Z

This MPG comparison is very rough. Different day, wind, weight, tires, temperature. Short distance.
I want to see more science to compare 6.8V10 and 7.3V8, somebody on two same (or very similar) model and weight motorhomes following each other quarter mile apart. At least 300 miles distance, preferably on empty roads and with drivers rotation.

Yes it is a fast mpg test and not a long run test but it does show that the 7.3 is still a gas hog, even if it was a better day and driving longer still appears it wont break the 7 mpg range.

garyemunson wrote:
I'm disappointed to read the F53 will retain the 6 speed.

The 6 speed would be better in the motorhome, in the video they could not get the truck to get past 8 gear on the 10 speed pulling a load.

The 6 speed would allow you to get to overdrive easier.