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Old 05-19-2015, 07:01 PM   #57
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We haven't used our dash air that much in 2 years on the road. I average around 8.6 MPG over that time pulling a toad in our 2000 American Tradition.
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Old 05-19-2015, 07:08 PM   #58
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If you're concerned about MPG on a diesel, here are a few facts for you to peruse. While it doesn't answer your question directly, it does offer some valuable insight.
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Old 05-19-2015, 07:09 PM   #59
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So you have a tank for hyd and one for PS fluid?? The Spartan has one tank that runs the Fan, Jacks & PS....I see no one will comment on the 60 hp loss from the fan..don't know where people come up with this merda!
I haven't seen any HWH Levelers that don't have their own independent fluid supply.
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Old 05-19-2015, 07:15 PM   #60
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I haven't seen any HWH Levelers that don't have their own independent fluid supply.

Me neither.
What is your mileage with/without dash air?
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Old 05-19-2015, 07:20 PM   #61
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I must agree. The topic of this thread is/was "does dash A/C use effect fuel mileage? ", not "Am I a cheap weasel because I'd like to save on fuel costs?"
I don't think weasel was the name of choice.
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Old 05-19-2015, 07:36 PM   #62
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This is from the link provided.
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Old 05-19-2015, 07:46 PM   #63
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This is from the link provided.
Well there ya go DMTTRANSPORT. How's that for merda? (whatever that means).
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Old 05-19-2015, 08:43 PM   #64
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DP owners: does dash A/C use effect fuel mileage?

Lol.

This is hilarious!

Thanks for the laugh!

Cheers!
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Old 05-19-2015, 08:49 PM   #65
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Ok. Maybe I was wrong

Hilarious! :-)
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Old 05-19-2015, 09:31 PM   #66
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Easy way to tell is to use silverleaf or other active engine monitor and on a clear non windy day on a long straight flat road set cruise on and ac off and observe mpg report.

Turn ac on and see what it does.

Comparing ovee time difficukt due to wind grade and other things that have more impact.

A gas car engine has less power and same compressor load as the similar compressor used on the much larger diesel.

Yes it still effects it but not near as much

You could look up conversion formulas that show energy required to operate the unit and do a lot of complex math to estimate what it does or just slow down about 5 mph and call it even....
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Old 05-19-2015, 09:32 PM   #67
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Some proof that the Hyd Fan takes 60 hp, hear say!, How much hp to move the steering wheel...same hyd pump...
Proof?

OOOHHH, you mean like the fact that my fan is not hydraulic? Mine is run by a belt that powers a drive shaft which turns a gear box and finally spins the fan.

And Freightliner is the one that says full load takes 60 HP. I figure they know best, after all they built it.
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Old 05-19-2015, 09:35 PM   #68
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I was, in no way, claiming how much power every RVs engine fan took. Just my own, because it's the one I know the most about.
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Old 05-19-2015, 09:56 PM   #69
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Well there ya go DMTTRANSPORT. How's that for merda? (whatever that means).
And of course the book is always right.....so a 300 hp diesel is only 240 when the fan comes on cause the book says so LOL
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Old 05-19-2015, 09:57 PM   #70
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This is from the link provided.
Belt driven or hyd??
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