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Old 09-18-2018, 08:25 PM   #1
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Brand: Thor Motor Coach
Model: Chateau 23U
State: Missouri
Posts: 62
THOR #8692
Ford V-10 in Thor 23U

So, this past year we have been driving our 2014 23U a bit. First trip California to Missouri in August, with 101 degree heat and 20 mile/hr crosswinds, the V-10 got poor millage (8.0) and struggled a bit. Only had 5000 miles on the clock.
Got her home, changed to full synthetic Mobil-1 5W-20. Did three or four weekend trips over the summer. Millage seemed to improve a bit, maybe 9.0 or so. This past week she turned over 10,000 miles. Coming home from Chicago, the motor seemed very lively, ran 2300 - 2400 rpm @ 70 mph all down I-55.
Could it be that after the breaking in period, the motor has just loosened up and is running better? Very little downshifting for grades, yes, I realize this is Illinois! Did have the typical head wind faced from Chicago to St.Louis though! Millage seemed to be above 9.0/mile, but I'll make a more scientific study on this next full tank of gas.
I want to say how pleased I am with the Ford motor and chassis. Thor did a fairly good job on the coach, did need a few things corrected! Lucky for me, I'm handy and cheap. Fixed most things myself: new water pump, got batteries and electrical system working well, stopped the damn stove from making too much noise and managed to figure out winterization all by myself, well with help form the forum!
Anyone else had this same experience?

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Old 09-18-2018, 08:36 PM   #2
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I'm getting 6.5mpg towing a Jeep on the interstates, a little more when slower on the back roads. I would love to see 8, but its not really broke in at 5000 miles. Very pleased with the power, I moved from a 22 four winds with a 5spd to a 29 Freedom Elite with the 6spd trans. Nice combination.
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Old 09-18-2018, 08:56 PM   #3
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Yeah its pretty common for the V-10 to "loosen" up a bit around the 10,000 mile mark. There is/was a lot of discussion about that over on ford-trucks.com when it first came out.

On both of my Superduty's I noticed about a 0.5 - 1.0 mpg increase after the 1st 10k. I'm not watching it closely enough on the Axis as this is my 3rd V-10 and thus I'm just letting it do its thing
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Old 09-18-2018, 10:21 PM   #4
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It's almost as if you can "feel" that V-10 starting to stretch a bit; and get nice and loose for the long run!

The 1330 triples in my Spyders got to that point at about the 8,000 mile mark...
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Old 09-19-2018, 12:54 AM   #5
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Our V10 just rolled over it's first 3000 miles. I can feel it loosening up a bit more on every trip.
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Old 09-19-2018, 12:57 AM   #6
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Hey Geno!
Love your avatar, had a restored 69 Mach 1 until arthritis made it too hard to get in and out of. Royal Maroon with blackout hood and stripes. Miss that car a lot!
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Old 09-27-2018, 01:53 AM   #7
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Quote:
Originally Posted by geno929 View Post
So, this past year we have been driving our 2014 23U a bit. First trip California to Missouri in August, with 101 degree heat and 20 mile/hr crosswinds, the V-10 got poor millage (8.0) and struggled a bit. Only had 5000 miles on the clock.
Got her home, changed to full synthetic Mobil-1 5W-20. Did three or four weekend trips over the summer. Millage seemed to improve a bit, maybe 9.0 or so. This past week she turned over 10,000 miles. Coming home from Chicago, the motor seemed very lively, ran 2300 - 2400 rpm @ 70 mph all down I-55.
Could it be that after the breaking in period, the motor has just loosened up and is running better? Very little downshifting for grades, yes, I realize this is Illinois! Did have the typical head wind faced from Chicago to St.Louis though! Millage seemed to be above 9.0/mile, but I'll make a more scientific study on this next full tank of gas.
I want to say how pleased I am with the Ford motor and chassis. Thor did a fairly good job on the coach, did need a few things corrected! Lucky for me, I'm handy and cheap. Fixed most things myself: new water pump, got batteries and electrical system working well, stopped the damn stove from making too much noise and managed to figure out winterization all by myself, well with help form the forum!
Anyone else had this same experience?
I am getting 7 miles per gallon on my 2018 Thor 37rb with the Ford V10. I believe that is typical.
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Old 06-30-2020, 09:58 PM   #8
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Thanks for your post GENO! Is your 2014 Ford V10 equipped with a 6 speed transmission?
If so, do you recall the rpm reading at 60 mph ? I saw the details for 70 mph (2300-2400). Also, were you pulling a toad or trailer ?

Thanks for your help !
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Old 06-30-2020, 10:11 PM   #9
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Unfortunately; we haven't seen GENO in here since just before last Christmas...
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Old 06-30-2020, 10:26 PM   #10
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Originally Posted by Bob Denman View Post
Unfortunately; we haven't seen GENO in here since just before last Christmas...


And if it’s a 2014 it would certainly have the 5 speed.
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Old 06-30-2020, 11:30 PM   #11
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Yup! The six-speed was added in 2018.
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Old 07-01-2020, 12:07 AM   #12
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Originally Posted by Bob Denman View Post
Yup! The six-speed was added in 2018.
Thanks, looking for comparison with my 2019 Thor Chateau : Rev at 1900-2000 rpm AT 55 mph: seems a bit too high. Maybe 1600 to 1800 rpm should be the average ? (without pulling a toad or excess load).
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Old 07-01-2020, 12:19 AM   #13
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Originally Posted by MountainGaut View Post
Thanks, looking for comparison with my 2019 Thor Chateau : Rev at 1900-2000 rpm AT 55 mph: seems a bit too high. Maybe 1600 to 1800 rpm should be the average ? (without pulling a toad or excess load).

Having owned rigs with both the 5 and 6 speed I can confidently say the 6 speed is a MUCH better match to the needs of a MH! You need to remember that any motor home is big, heavy and about as aerodynamic as the side of a barn. It takes a lot of power to move it at highway speeds. It also accounts for the generally dismal gas mileage.
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Old 07-01-2020, 12:36 AM   #14
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Thanks for your input !
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