Reply
 
Thread Tools Display Modes
Old 09-23-2013, 05:32 PM   #1
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
Mileage.....

Well, I've put 8K miles on my Berky since Memorial Day. From Phoenix to Denver, out to Elkhart and then up to Glacier NP. Then on to Seattle and from there south to San Francisco. Finally out to Elko, NV and the down to Las Vegas which is probably going to be my "wintering location"

In this rather extended trip, I've averaged just over 11 MPG. I've seen it as high as 12.5 and as low as 9.5 but overall I'm right at 11 to 11.2. At one point I actually saw 13.2 but think I may have had a pretty good tail wind, so I'm not counting that segment.

Yesterday, coming from Elko, NV to Las Vegas, NV (440 miles) I averaged 12.1

All in all, pretty good for a "big old coach".

Boowho??
__________________

boowho is offline   Reply With Quote
Old 09-23-2013, 05:35 PM   #2
Senior Member
 
tmmar's Avatar
 
Join Date: Apr 2008
Location: Long Island (Nassau County), NY
Posts: 4,325
Boo,
That IS pretty good mileage. Which engine do you have - the 340 or 360?
Tom
__________________

__________________
Tom and Margaret
2014 Berkshire 390bh-60

tmmar is offline   Reply With Quote
Old 09-23-2013, 05:56 PM   #3
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
Quote:
Originally Posted by tmmar View Post
Boo,
That IS pretty good mileage. Which engine do you have - the 340 or 360?
Tom

340 Tom.....

But I forgot to mention that I rarely drive over 60 and usually right around 58. I always say I have nowhere (in particular) to go and the rest of my life to get there!!!

Drag goes up exponentially with speed increases, so the difference between the high 50's and mid 60's MPH (or even faster for some) can be dramatic.

Boowho??
boowho is offline   Reply With Quote
Old 09-23-2013, 06:02 PM   #4
Senior Member
 
tmmar's Avatar
 
Join Date: Apr 2008
Location: Long Island (Nassau County), NY
Posts: 4,325
Boo,
I guess you are right because I usually drive around 65 and my mileage is not as good as yours. Guess I will need to slow down some.
Thanks,
Tom
__________________
Tom and Margaret
2014 Berkshire 390bh-60

tmmar is offline   Reply With Quote
Old 09-23-2013, 06:07 PM   #5
Senior Member
 
rattleNsmoke's Avatar
 
Join Date: Oct 2012
Location: Western Connecticut
Posts: 1,587
Hey, as they say...'Your mileage may vary'
__________________
2010 Cedar Creek 5th Wheel 34SATS "The Beast"
2006 Ford F350 Lariat 6.0L Diesel
2003 Harley Heritage Softail "Hogzilla"
1986 Marriage to "Wifey" (patience of a saint)
rattleNsmoke is offline   Reply With Quote
Old 09-23-2013, 06:26 PM   #6
Senior Member
 
kingwood390bh's Avatar
 
Join Date: Nov 2011
Posts: 270
I made about 10.3 in a little over 4000 miles, towing a CRV, and using about 30 hours of generator. I know of no other class A diesels that even come close. Most of my friends average 7.5.
kingwood390bh is offline   Reply With Quote
Old 09-23-2013, 06:50 PM   #7
Senior Member
 
Campin Cajun's Avatar
 
Join Date: Mar 2013
Location: Cut Off, La.
Posts: 1,830
On our trip to Arkansas I averaged 10.2 mpg.


On the steeper downhill runs I was getting 75 mpg lol
__________________
2013 Berkshire 390BH
Campin Cajun is offline   Reply With Quote
Old 09-23-2013, 06:58 PM   #8
phat phrog stunt crew
 
Join Date: Jul 2012
Location: bethalto il
Posts: 1,422
just curious, but most coaches seem to be in the 300 hp or so range. do they make an option for a larger hp engine? not in any kind of market for one, was just curious. to my way of thinking its more horses, less work, better economy.
dwaynerz is offline   Reply With Quote
Old 09-23-2013, 08:11 PM   #9
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
Quote:
Originally Posted by tmmar View Post
Boo,
I guess you are right because I usually drive around 65 and my mileage is not as good as yours. Guess I will need to slow down some.
Thanks,
Tom

Tom.....

It WILL make a difference. Whether it's enough of a difference to make it worthwhile would be up to each and every coach owner, based upon their own personal needs/preferences.

I found something interesting as I was tracking all this over the last few months.

If rolling along on the flat land for say 50 miles and getting 11 MPG, starting up a hill a mile or two long, the MPG might drop a tenth or two.

BUT to regain those lost tenths of a mile (back to 11 MPG) when back on level ground could take as long as 10 or 20 miles.

In other words, the negative effects of an increase in engine load are felt sooner/more dramatically than the positive effects of a decrease in engine load. Or so it seems to me.

Boowho??
boowho is offline   Reply With Quote
Old 09-24-2013, 11:34 AM   #10
Junior Member
 
Join Date: Jul 2013
Location: North Port Florida
Posts: 10
I've been getting about the same mileage on my 2013 Berkshire on our 7500 miles summer trip away from Texas. (a little less thru the Rockies) but great from Yellowstone back to Houston. I was told on the 6 speed Allison that 5th and 6th were both overdrive. We found you had to go up to about 65 to get it to drop into 6th but then could back off to about 61-62 with cruise control and it would stay in 6th.
jimanddonna is offline   Reply With Quote
Old 09-24-2013, 11:42 AM   #11
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
Quote:
Originally Posted by jimanddonna View Post
I've been getting about the same mileage on my 2013 Berkshire on our 7500 miles summer trip away from Texas. (a little less thru the Rockies) but great from Yellowstone back to Houston. I was told on the 6 speed Allison that 5th and 6th were both overdrive. We found you had to go up to about 65 to get it to drop into 6th but then could back off to about 61-62 with cruise control and it would stay in 6th.
Does your mode button work?? Mine was inoperative when I got the coach, but FL replaced the shifter box under warranty. Economy mode gives an extra .5 to 1 MPG.

Before I got the mode thing fixed, I couldn't get into sixth nor stay in sixth under about 68 MPH. Now I can stay in top gear all the way down to 58 or so.

BTW, on a 3 or 4 % uphill grade the instantaneous MPG will sometimes drop all the way down to 3-4 MPG. OUCH!!!! So if you did that well in the Rockies, you're in tall cotton.

Boowho??
boowho is offline   Reply With Quote
Old 09-24-2013, 12:03 PM   #12
Junior Member
 
Join Date: Jul 2013
Location: North Port Florida
Posts: 10
I've never used "economy mode" and don't know how to unless you're referring to manually changing the gear you're in. I might be able to drop to 58 in 6th but since I don't normally drive that slow I haven't tried that either.
jimanddonna is offline   Reply With Quote
Old 09-24-2013, 12:07 PM   #13
Senior Member
 
tmmar's Avatar
 
Join Date: Apr 2008
Location: Long Island (Nassau County), NY
Posts: 4,325
If you push the mode button, the trans will shift into 6th at about 62 mph. It will also not down shift as easily on some inclines as it would without the mode button on.
__________________
Tom and Margaret
2014 Berkshire 390bh-60

tmmar is offline   Reply With Quote
Old 09-24-2013, 07:50 PM   #14
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
Quote:
Originally Posted by jimanddonna View Post
I've never used "economy mode" and don't know how to unless you're referring to manually changing the gear you're in. I might be able to drop to 58 in 6th but since I don't normally drive that slow I haven't tried that either.

There is a button labeled "mode" on your shift box - mode being either "performance" or "economy". There's a small LED in the button and when illuminated the tranny is in "economy" mode. This changes the shift points so the tranny will tend to go into (or stay in) a higher gear at lower RPM's.

One thing to note if you decide to start using economy mode is that you can select it (so the light is on) but as soon as you shut down the engine, it will default back to performance mode next time you start the engine. So you have to select economy EVERY time you start the engine, assuming you want to use economy.

Boowho??
boowho is offline   Reply With Quote
Old 09-24-2013, 10:27 PM   #15
Senior Member
 
62_inrightlane's Avatar
 
Join Date: Jun 2012
Location: Venice, FL / Hopkins, MI
Posts: 163
Press the mode button when you are stopped or underway. When the light comes on you are in economy mode and I get an extra 1/2 MPG

__________________
Marc & Jan
Molly, Abby & Katie | The Cocker K-9 Kids!|Toad 2014 Cadillac SRX
2012 Berkshire 360FWS, Brake Buddy Vantage|Wineguard Travler SK-3005
62_inrightlane is offline   Reply With Quote
Old 09-25-2013, 09:20 AM   #16
Senior Member
 
gmcnitt's Avatar
 
Join Date: Oct 2008
Location: EML(Fort Worth, TX)
Posts: 110
I have an 09 Charleston 40 ft coach, using economy mode going the speed limit plus a few pulling a Jeep Wrangler I get between 6.5 and 7 mpg. In Texas the speed limit is 70/75, so going down the road near 80 mph, smooth as can be. I'm not retired yet, so time matters to me, especially when I only have a week off to cover driving, relaxing, etc. We typically will do 400 miles a day max, going the speed limit saves us quite a bit of time each day to relax in the evenings. Perhaps if I ever get to retire I will see what it is like to slow down a bit....
gmcnitt is offline   Reply With Quote
Old 09-25-2013, 04:07 PM   #17
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
Quote:
Originally Posted by gmcnitt View Post
I have an 09 Charleston 40 ft coach, using economy mode going the speed limit plus a few pulling a Jeep Wrangler I get between 6.5 and 7 mpg. In Texas the speed limit is 70/75, so going down the road near 80 mph, smooth as can be. I'm not retired yet, so time matters to me, especially when I only have a week off to cover driving, relaxing, etc. We typically will do 400 miles a day max, going the speed limit saves us quite a bit of time each day to relax in the evenings. Perhaps if I ever get to retire I will see what it is like to slow down a bit....
Not trying to be s smart-butt, but an old buddy used to say of a "normal" vacation "We gotta hurry up and relax"!!

That's why I said earlier that it's all a matter of personal preference.

Oh, and retirement will come quicker than you think.

Boowho??
__________________

boowho is offline   Reply With Quote
Reply

Tags
mileage

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 02:07 AM.


×