Towing my 14K pound 5th wheel I'm getting 10.4 @55 mph..towing @65 mph 9.5 mpg. This is mostly on flat hwys and using tow/haul mode with engine braking on. 4x4 with 4.10 gearing. Too many variables to get any kind of accurate answer on what you're going to be towing. Best towing mpg's will have to be at a lower speed thats reasonable.

 

Just went over to the far end of the state and back over the last two weekends.. 6400lb bumper pull, 3.73's, held about 60mph, up down and sideways, just filled up this morning, hand calculated 10.1mpg, dash says 10 even. Gas was $2.09, diesel $2.69.

 

Think of all the money you're saving on spark plugs....lol

I hauled a flat front enclosed car trailer from Vancouver BC to New York. Truck bed full up to tonneau cover with tools etc. managed 12mpg on the trip. 20-25% increase in fuel economy is a big difference considering that also comes with WAY more power when towing.

 

Yes...spark plugs! I forgot spark plugs! LOL!

 

which engine?

That's very similar to what I pulled.

If I can get 11 MPG + I'll trade almost immediately. Having been through a hurricane where gas was hard to get, but diesel readily available changes the equation.

 

Redrockerstl55, looks like we have about the same setup. What loaded tongue weight do you typically have? Have you done anything to help a$$-end sagging? Also, any sway at 68?

 

Advantage Gasser they don't end up in there for repairs as often. and if they do way cheaper to fix

 

Here's my setup. 29' Bunkhouse.

 

I just returned from a 2000 mile trip to Kansas and back from Atlanta, GA. I travelled through St. Louis on the way to Kansas and got 14.7 mpg for my first tank running at 70 - the adaptive cruise was not on. I was really pleased with this mileage. From St. Louis to my destination in Kansas I got 13.0 because of the hills and stop and go across Kansas. I pulled a 23' Airstream weighing 5500 pounds. I had about 1000 pounds of stuff in the back of my truck.

My trip back was down through Oklahoma then across Arkansas and TN down to Birmingham to Atlanta. I averaged 13.0 mpg for the 2 tanks on the return home. We used the adaptive cruise and it was set at 70.

Overall I was very pleased with the mileage. The truck towed like a dream, but I came from a 2008 V8 Toyota 4Runner, so we're comparing two radically different towing platforms. I was lucky to get 10 mpg from the 4Runner going 60.

I forgot to mention that I had 2500 miles on the truck at the start of the trip.

 

Hi there...nice rig you got there! I think ours are close but not quite the same.

I have the 328 BHS. I am scratching my head trying to figure out your model. It has a huge awning. I'm guessing you have a 310 BHS. Almost the exact same set up. Congrats on yours. It looks fantastic!!!

My tongue weight is 1,200 lbs. Plus whatever gear I have in the front trunk. I'm guessing it comes out to around 1,400 lbs.

I am using a etrailer weight distributing hitch. It's a game changer.

https://www.etrailer.com/Weight-Dist...EQ37100ET.html

I towed with just a ball hitch and the back end was not only sagging but the front end felt pretty light. If you hit an angled frost heave on a bridge at 65 MPH it can get pretty scary fast.

This WDH does a great job spreading weight towards the front axle and when you hit those frost heaves or surprising really bad bumps everything remains very connected, solid, secure, safe and straight. My dealer told me if what I am towing is 50% or more of the tow vehicle weight a good investment is a weight distributing hitch.

It does add about 3-5 minutes when you hook up...but it's well worth it.

You can still get a very little bit of sway in say a 25+ MPH cross wind...but much less than without this hitch. Passing Semi's or big busses is no big deal.

Hope that helps.

 

We took a 130 mile round trip this weekend with our ~12' tall, 9500 lb fifth wheel and the gauge read 11.3 MPG when we got home (all miles were towing except for 5 miles to church and back). This was through central MO to Lake of the Ozarks with some hills thrown in. I set the cruise at 65 this time instead of 68-69 like I normally do and I picked up about .3 - .5 MPG. Without cruise control, I can pick up another .5 MPG if I let it slow down a few MPH going up the hills, but it's not worth the hassle when the adaptive cruise works so well.

 

His signature has a 2017 6.2 pickup in it.

One thing to keep in mind.. a whole new 6.2 motor costs 4500 bucks from Ford, FlatbedEd who has a 12ft flatbed that does hotshot deliverys in texas just crossed 425k miles in his 2011 (maybe 12?) F250 before the motor gave out.. any he reported nothing major before that, just routine oil changes.

 

Wont the diesel break in over a longer time, resulting in better fuel mileage, eventually.

 

10.8 towing #10,000 over mountain terrain and passes. 67MPH except for passes.
Towing #4000 over same terrain and 70 MPH I get 13.2MPG
6000 miles on truck.

Jack

 

Yes 310BHS. To stay on post topic, I get about 10 mpg towing it with the 4-wheeler on the back. I have just over 1600# on the hitch. I had an 1200# Equalizer WD hitch but it transmitted a lot of vibration to the cab. I changed to a normal 3" hitch rated to 2100# and it was a lot more comfortable. I use air bags to tighten it a little since it seemed very "boaty". The best ride has been loaded with the 4-wheeler on top. Very little sway between 65-70. I don't know if the WD hitch was set correctly for this truck though. It was set for my old F150 with a 4" lift. Maybe a little more experimenting is in order.