V10 gas towing fuel economy

[noteven]

For those of you towing 5th wheel RV trailers in the 13,000 to 16,000lbs gross trailer weight rating with Ford gas V10's, what are you seeing for fuel economy?

[Turtle_n_Peeps]

But a cylinder stuffed with more fuel/air will net more power from the same fuel due to the higher compression....so you gain more power per fuel.

And where does the energy come from to compress that air for a higher compression come from? It takes a lot of energy to run an air compressor.

Tell you what, you just find me a supercharged engine, turbo or driven, that has a better BSFC dyno run than an N/A engine and post it up and I will believe you. And make sure it's apples to apples.

Or you can read about what happened to this guy that thought the same thing as you. :E

[rhagfo]

marcsbigfoot20b27 wrote:

Turtle n Peeps wrote:

06Fargo wrote:
Thanks for your responses so far -

I forgot to also ask what your truck's empty mpg averaged?

What if a guy had a V10, normalized for high altitude with a turbo kit vs. a late model smogdiesel?

A turbo packs more air in the cylinder. Since a gas engine likes to run stoichiometric guess what it will pull in with it?

Yep; that liquid stuff that costs a lot. Depending on how much boost you run it can pull in twice the amount of that liquid stuff, or even more.

But a cylinder stuffed with more fuel/air will net more power from the same fuel due to the higher compression....so you gain more power per fuel.

You still need to fight detonation (ping).

[marcsbigfoot20b]

Turtle n Peeps wrote:

06Fargo wrote:
Thanks for your responses so far -

I forgot to also ask what your truck's empty mpg averaged?

What if a guy had a V10, normalized for high altitude with a turbo kit vs. a late model smogdiesel?

A turbo packs more air in the cylinder. Since a gas engine likes to run stoichiometric guess what it will pull in with it?

Yep; that liquid stuff that costs a lot. Depending on how much boost you run it can pull in twice the amount of that liquid stuff, or even more.

But a cylinder stuffed with more fuel/air will net more power from the same fuel due to the higher compression....so you gain more power per fuel.

[Turtle_n_Peeps]

06Fargo wrote:
Thanks for your responses so far -

I forgot to also ask what your truck's empty mpg averaged?

What if a guy had a V10, normalized for high altitude with a turbo kit vs. a late model smogdiesel?

A turbo packs more air in the cylinder. Since a gas engine likes to run stoichiometric guess what it will pull in with it?

Yep; that liquid stuff that costs a lot. Depending on how much boost you run it can pull in twice the amount of that liquid stuff, or even more.

[Campin_LI]

My Excursion with V10 towing a 10,000 lb travel trailer averages 7.8 mpg at mixed speeds

[Supercharged]

I found the easy way is buy all the gas you want, don't check the monthly bill, just pay it and forget about it. Life is to short now.

[lbrjet]

That is a lot of weight even for the mighty V10. I would budget for 7 MPG and if you get slightly higher be happy.

[TOOBOLD]

We tow a 10K 5th wheel with our '05 F350 CC,LB 4.30 axle and get 9mpg when DH goes 62mph any faster and we're at 8mpg. Empty 12-13mpg.

[marcsbigfoot20b]

Wow I don't feel so bad now.

I tow my 7000 lb 27 ft bigfoot with my 99 tahoe 4x4 with 150,000 miles on it and get about 9.8 mpg on the ultra gauge, like a scan gauge.
That is at 70 mph.
No trailer 19 mpg at 70 🙂

Of course I have added serious mods, like efi live custom tune, 1.6 scorpion dual roller rockers, ported throttle body, VMAX manifold spacer, ceramic coated long tube headers and custom 3" exhaust , electric cooling fans, 180 thermostat, k&n filter, etc.

But I still wish I had a diesel or v10 for the big hills.

[Dave_H_M]

:h bid time better hang onto that V10. That mileage is beating the socks off of what my 6.2 gets.

[Desert_Captain]

Michelle.S wrote:
When RVing the only thing tracking fuel mileage is good for is to let you know if there's a problem. If you notice a sudden drop in mileage, you better be looking for the cause. Other wise I agree with others, RVing and MPG don't go together.

Excellent point, tracking your mileage is like periodically taking the engines pulse and every bit as important as monitoring coolant/transmission temps and oil pressure. If something is going to fail you usually will get a warning in the form of change in these readings. You cannot have to much info which is just another reason to run a Scan Gauge. :C

[Michelle_S]

When RVing the only thing tracking fuel mileage is good for is to let you know if there's a problem. If you notice a sudden drop in mileage, you better be looking for the cause. Other wise I agree with others, RVing and MPG don't go together.

[31_tundra]

camp-n-family wrote:



V10 and "economy" don't belong in the same sentence. Less than 10MPG is guaranteed.

X2 🙂

[WA7NDD]

My class C V-10 gets 9mpg. It is interesting to see these type of questions because I remember back in the '60's when gas was 16 cents a gallon and most cars got 10 mpg. I had a new Chevy pickup in 1971 and I never got more then 10 out of it unloaded. So I think MH and Pickup towing are doing well.