Thread Tools Display Modes
Old 07-14-2014, 06:35 PM   #1
Berkshire club
Berkshire Driver's Avatar
Join Date: Sep 2013
Location: Texas
Posts: 59
How far can we go?

Hey long haulers out there just how far can we expect to go on 1 tank of DEF? not all the way to engine shut down but approx how many miles per
I carry a 5 gal emergency just in case bubba at middle of nowwhere doesn't know what def is. and those truck stops aren't always the easiest to get to.
Just a wonder moment

2014 360QL-60 Mystic Garnet
Berkshire Driver is offline   Reply With Quote
Old 07-14-2014, 06:39 PM   #2
Senior Member
JTN8's Avatar
Join Date: May 2013
Location: Virginia
Posts: 619
I usually get about 2000 to 2500 per half a tank of DEF. Once I hit half, I top it off. Mine is a 2014 and I just hit 6500 miles and topped it off twice now and almost ready to top it off again.


Sent from my iPhone using Forest River Forums

JTN8 is offline   Reply With Quote
Old 07-14-2014, 07:31 PM   #3
Senior Member
dan-nickie's Avatar
Join Date: Feb 2014
Location: Dallas TX
Posts: 1,531
I figure I could go at least once across the US.
Far enough I don't worry about carrying any for emergency.
2014 Berkshire 390RB-60
dan-nickie is online now   Reply With Quote
Old 07-14-2014, 07:39 PM   #4
Senior Member
CSMRetired's Avatar
Join Date: May 2013
Location: N. Central Texas
Posts: 1,102
I have used approximately 7 1/2 gallons in 6700 miles

'Pa Pa's Palace'

2014 Sportscoach Crosscountry 405FK
2015 Jeep Grand Cherokee Overland
CSMRetired is offline   Reply With Quote
Old 07-14-2014, 10:46 PM   #5
Senior Member
Mbh818's Avatar
Join Date: Apr 2013
Location: East Stroudsburg, PA
Posts: 105
Its easily 3000 miles. I top it off whenever i can because, like you said, the truck stops are not always easy. I have yet to find one with the def pump on the passenger side where our tanks are. They always have it on the driver side, which leave us to swing around and pull in backwards. Not to easy in a crowded truck stop.

Sent from my iPhone using Forest River Forums
Mike Hollar
2014 Berkshire 390BH-40
2012 Chevy Equinox - TOAD
Mbh818 is offline   Reply With Quote
Old 07-15-2014, 08:55 AM   #6
2011 Berkshire 390BH
Superchief's Avatar
Join Date: Aug 2011
Location: Lancaster, NY
Posts: 1,063
Mbh818, I use a orange road cone and stick it behind a truck with no other trucks in line. Beats waiting for them to figure out what I'm trying to do going in backwards.

Sent from my iPhone using Forest River Forums

Finally completed all State visits in August 2011 with a trip to North Dakota.
Superchief is offline   Reply With Quote
Old 07-15-2014, 09:04 AM   #7
Senior Member
tmmar's Avatar
Join Date: Apr 2008
Location: Long Island (Nassau County), NY
Posts: 4,277
I was at a Flying J last week and went around to pull into a truck fuel lane going in the opposite direction. A Flying J attendant came over and asked what I was doing. When I told him I needed to get DEF, he put an orange barrel in front of one of the fuel lanes. I then pulled in, going opposite to the 'normal' traffic flow and filled my DEF tank. I also needed air in one of my tires and the air hose reel kept pulling back trying to rewind the hose. This attendant came over and held the reel for me so that I could put air in my tire. He was extremely friendly and helpful. And yes, I did give him a few bucks for a tip.
Tom and Margaret
2014 Berkshire 390bh-60

tmmar is offline   Reply With Quote
Old 07-15-2014, 09:59 AM   #8
Senior Member
Campin Cajun's Avatar
Join Date: Mar 2013
Location: Cut Off, La.
Posts: 1,830
I agree with everyone else, you will get between 3000 and 5000 miles on one tank of DEF.

When I am at a truck stop that has DEF I just pull up to where my DEF tank is even with the pump on the PS and use that pump to fill my tank. The hose is long enough to pull out and reach the DEF tank.

2013 Berkshire 390 BH
2013 Berkshire 390BH
Campin Cajun is offline   Reply With Quote
Old 07-15-2014, 10:28 AM   #9
Senior Member
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
DEF usage is around 2 gallons of DEF for every 100 gallons of diesel.

I think it's a 15 gallon tank, so how far can you get on 700 gallons of diesel?

Around 7000 miles for me. I still fill at about 1/2 tank though.

boowho is offline   Reply With Quote
Old 07-16-2014, 12:48 PM   #10
Senior Member
gasman94's Avatar
Join Date: Oct 2012
Location: Southwestern Mi
Posts: 1,209
Have any of you guys found an easy way to fill the tank with store bought def? It's really tight in that compartment. I bought a 2.7 gallon def container and spout from 5 star DEF. I still had to modify it with a longer hose so that I could hold it outside of the compartment to give it enough pressure to get it into the tank. Also, remember that DEF has an expiration date so it must be rotated in storage.

gasman94 is offline   Reply With Quote

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 is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 11:11 PM.