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Old 04-01-2016, 09:57 AM   #57
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WalMart house brand Supertech DEF is cheap and the container is easier to use than other brands.
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Old 04-01-2016, 11:06 AM   #58
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Should choosing the right Cummins on its HP/Torque Rating?

I got 8 mpg AVERAGE on a recent 500 mile trip and was very pleased with that.

However, I got 256 mpg going down the hills... ;-)
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Old 04-01-2016, 12:38 PM   #59
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The guy that claimed 12-14 mpg is reading the mpg gauge in the dash and will be greatly disappointed when he does an actual calculation. My gauge tells me I have a 10.6 overall average for 30, 000 miles and that's pulling a 12,000# trailer for a gross weight over 50,000#. It's always a let down when I do the math and come up with 6.7 to 7.2.
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Old 04-01-2016, 06:26 PM   #60
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Originally Posted by Rich-n-Linda View Post
LOL!! Anyone who actually believes he can get 14 mpg in a 34,000 pound diesel motor home is living in a fantasy world.

I have some Pacific beachfront property in Nebraska he might be interested in. ;-)
I just smiled internally, he is a good guy and a good friend. Who am I to berate his new MH and his displayed mileage from the computer.
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Old 04-01-2016, 07:22 PM   #61
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It will be a shock (and be very quiet) when, based on 14 mpg, he tries to stretch his fuel.
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Old 04-02-2016, 01:05 PM   #62
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WalMart house brand Supertech DEF is cheap and the container is easier to use than other brands.
I'll check this out. When I first got the coach I could not find DEF "cheap" in the box or easy to use.

About MPG. On the flat I can easily get 14+mpg. My dash says 7.6 average in 32K through lots of mountains and over many long 6% grades. I must be getting better than that when idle time and mountains are excluded. Right?

Rick Y
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Old 04-02-2016, 01:29 PM   #63
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LOL!! Anyone who actually believes he can get 14 mpg in a 34,000 pound diesel motor home is living in a fantasy world.
Guess you haven't driven one to know have you? Yes, on flat ground, at a steady speed you will see mileage like that on a instant readout like a VMS or VMSpc. However you won't AVERAGE that.
I regularly see 13 to 18 mpg under those conditions, then I also see 2.5 to 3 on the hills and 256 going down. But our overall average is 7.6 for 45,000 miles.
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Old 04-03-2016, 09:52 AM   #64
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My actual MPG is always lower than the computer shows. Seems like that has been the case on every vehicle I have owned since they started using them. That goes for Ford, Chevy, and now Spartan. Usually 0.5 - 1 MPG less. It gets a little clouded on RV's with heavy generator or diesel burner use.
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Old 04-03-2016, 06:06 PM   #65
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Guess you haven't driven one to know have you? Yes, on flat ground, at a steady speed you will see mileage like that on a instant readout like a VMS or VMSpc. However you won't AVERAGE that.
I regularly see 13 to 18 mpg under those conditions, then I also see 2.5 to 3 on the hills and 256 going down. But our overall average is 7.6 for 45,000 miles.
We agree. Average is simply that. Now that fuel is way under $5 a gal the mile per buck is what really counts I would say. MORE MILES PER BUCK!!!

Rick Y
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Old 04-04-2016, 09:16 AM   #66
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We agree. Average is simply that. Now that fuel is way under $5 a gal the mile per buck is what really counts I would say. MORE MILES PER BUCK!!!

Rick Y
...... and around here, diesel is cheaper than regular unleaded for a change.
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Old 04-04-2016, 12:08 PM   #67
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I guess I'm on the end of the spectrum. Number one on my search list is chassis and engine. My minimum is 500hp and I will not own a Freightliner chassis with the radiator on the rear.

I have a few other must haves like Aqua Hot, 3-4 slides, and 3 A/Cs. After that there are several nice to haves. I want a residential refrigerator, but if it doesn't already have one I will convert it.
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