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-   -   UPDATE : My True MPG 7.3L V-8 Gas (https://www.irv2.com/forums/f87/update-my-true-mpg-7-3l-v-8-gas-532975.html)

jjrbus 05-01-2021 06:56 PM

Holy bat poop Batman. Consistently getting over 10 mpg in one of those rigs is not good it is spectacular. Can't wait to read the reviews on these.

AJMike 05-02-2021 02:50 PM

Quote:

Originally Posted by RonandDeb (Post 5733384)
My MB diesel is averaging about 13mpg, from what the dash says anyway..

Are you pulling a toad? Or constantly in stop and go traffic? That seems awfully low for a small diesel C.

We get 17-20 with our diesel Winnebago Fuse and I have understood that the MB and Ford diesels are about equivalent in terms of fuel economy.

Ron Dittmer 05-02-2021 10:55 PM

I have noticed that one variable not brought up much is "cruising speed". The problem with the Ford V10 (assumed to be worse yet with the bigger V8) is that it is very common that they cruise faster than people driving Sprinters. I can't explain it. I simply notice that when Sprinter owners bring up their cruising speed, it's roughly 7 to 10 mph slower than people in an E-series.

It would be very interesting to take two rigs (E350-V10 versus Sprinter diesel) with the exact same house and contents, then travel in caravan style for a real comparison of fuel economy. Phoenix USA used to build model 2350 on the E350-V10 and also on the Sprinter-diesel, a perfect scenario.

nodine 05-03-2021 05:36 AM

Quote:

Originally Posted by Ron Dittmer (Post 5735992)
I have noticed that one variable not brought up much is "cruising speed". The problem with the Ford V10 (assumed to be worse yet with the bigger V8) is that it is very common that they cruise faster than people driving Sprinters. I can't explain it. I simply notice that when Sprinter owners bring up their cruising speed, it's roughly 7 to 10 mph slower than people in an E-series.

It would be very interesting to take two rigs (E350-V10 versus Sprinter diesel) with the exact same house and contents, then travel in caravan style for a real comparison of fuel economy. Phoenix USA used to build model 2350 on the E350-V10 and also on the Sprinter-diesel, a perfect scenario.

First I will admit that I am not a young person, 75 next month, and it has been my observation that folks younger than me drive much faster. I would guess that folks who own the Sprinter chassis would tend to be older than many who own a gas Class C. Our 40 foot diesel pusher drives and handles nicely at 70 to 75 but we keep the cruise at 63 to 65 MPH. I have been sailing along at 65 and had many a gas Class C pass me at 75 or 80. Guess they have a schedule to keep - I don't.

Bob

RonandDeb 05-03-2021 10:28 AM

Quote:

Originally Posted by AJMike (Post 5735307)
Are you pulling a toad? Or constantly in stop and go traffic? That seems awfully low for a small diesel C.

We get 17-20 with our diesel Winnebago Fuse and I have understood that the MB and Ford diesels are about equivalent in terms of fuel economy.

No toad, but that's sticking close to home driving. Should have mentioned that. First trip isn't for a few weeks. I'm hoping for 17 plus on the highway but would be happy with at least 15.

Ron Dittmer 05-03-2021 03:40 PM

Quote:

Originally Posted by nodine (Post 5736131)
I have been sailing along at 65 and had many a gas Class C pass me at 75 or 80. Guess they have a schedule to keep - I don't.

Bob

Bob, you bring up an excellent point. A working family with limited vacation time, wants to cut down on transit time so that they can gain a day each way driving hard, long and fast. A 16 day vacation knocking off 2 days of travel across the country, is a serious amount of extra "destination" time.

When we were young with young kids and limited vacation time, our rig was a slug so speeding was not an option. We made up the time by driving 24/7. It was great to let the kids sleep while we drove through the night. Now-a-days, safety is such a big focus and is the law, we'd be arrested for letting the children sleep on the beds.

jackreno 05-04-2021 12:17 AM

Quote:

Originally Posted by Ron Dittmer (Post 5736910)

When we were young with young kids and limited vacation time, our rig was a slug so speeding was not an option. We made up the time by driving 24/7. It was great to let the kids sleep while we drove through the night. Now-a-days, safety is such a big focus and is the law, we'd be arrested for letting the children sleep on the beds.

I am waiting for the self drive motorhomes to come out and load in the address where to go and go back and take a nap and hope to wake up in my vacation spot..

:D

Ron Dittmer 05-04-2021 06:04 AM

Quote:

Originally Posted by jackreno (Post 5737380)
I am waiting for the self drive motorhomes to come out and load in the address where to go and go back and take a nap and hope to wake up in my vacation spot..

:D

Now you're talking! That would be awesome.

hpdrver 05-04-2021 07:26 AM

GM is beginning to install itsí super cruise system in some of its vehicles. Although not totally autonomous, it performs a lot of the driving tasks. I suspect Ford will not be far behind so in the next 5 years, significant enhancements in driving functions will occur.

nodine 05-04-2021 02:43 PM

Quote:

Originally Posted by hpdrver (Post 5737570)
GM is beginning to install itsí super cruise system in some of its vehicles. Although not totally autonomous, it performs a lot of the driving tasks. I suspect Ford will not be far behind so in the next 5 years, significant enhancements in driving functions will occur.

And I am sure it will help those in the legal profession! You can almost smell the lawsuits.

Bob

AJMike 05-04-2021 03:19 PM

Quote:

Originally Posted by Ron Dittmer (Post 5736910)
Now-a-days, safety is such a big focus and is the law, we'd be arrested for letting the children sleep on the beds.

Is that right? Is it really illegal for someone to sleep on a bed in an RV when it is on the road?

Seems a bit excessive.

RonandDeb 05-04-2021 05:45 PM

Quote:

Originally Posted by AJMike (Post 5738119)
Is that right? Is it really illegal for someone to sleep on a bed in an RV when it is on the road?

Seems a bit excessive.

It's true, it's illegal. You cannot have occupants sleeping in a bed while you are driving. The only way you can sleep is with a seatbelt on and sitting up.

Even the slightest accident can send them flying. Not that people don't do it, but it's just not safe, any way you look at it. :thumb:

hpdrver 05-04-2021 06:47 PM

We picked up our new Coach House RV last month and drove it 1200 miles home to Texas. Set trip monitor in dash to track journey. Drove various speeds but averaged 70mph. Gas mileage in computer was 10.9 with the Godzilla drivetrain. Did not track manually. Coach House is very aerodynamic so a 11 mpg is possible if I lowered my speed to 62mph. Did not tow.

jackreno 05-04-2021 10:26 PM

Quote:

Originally Posted by hpdrver (Post 5738367)
We picked up our new Coach House RV last month and drove it 1200 miles home to Texas. Set trip monitor in dash to track journey. Drove various speeds but averaged 70mph. Gas mileage in computer was 10.9 with the Godzilla drivetrain. Did not track manually. Coach House is very aerodynamic so a 11 mpg is possible if I lowered my speed to 62mph. Did not tow.

Yea I drive 62-65 mph and my reading is 11.9 average so far on the dash monitor, I am also getting around 13 mpg at 65 mph flat road.

Ford has done very well with this motor so far I hope it has a non issue repair problems down the road, so far heard very few issues from the 2020 Trucks other than the 10 speed trans issue.

The 10 speed trans was one of my reasons not to buy the Transit class B+ cause the 10 speeds seem to have issues after a while, also heard there is now a recall on the Ford 10 speed, the 6 speed trans has been in service since 2016 and has had very few issues.

The 6 speed Torque shift is the same as the 5 speed just one more overdrive, the 5 speed was also a great transmission.

I sold my class A 2008 with the V-10 and 5 speed, great motor and trans, zero issues at 52,000 miles when I sold it and seemed it would last other 100,000 without issues, I hope the same for the V-8..


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