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06-08-2016, 07:51 AM
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#1
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Junior Member
Join Date: Jul 2010
Posts: 25
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DEF tank on 2011 BH
Stupid question, but where will I find my DEF tank on an 11' bunkhouse.
It took me 2 hours to figure out the warning light, but we're good now.
Thank you for any help
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06-08-2016, 07:58 AM
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#2
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Senior Member
Join Date: Apr 2008
Location: Long Island (Nassau County), NY
Posts: 4,352
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Should be in the third compartment from the rear on the passenger side.
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Tom and Margaret
2014 Berkshire 390bh-60
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06-08-2016, 10:18 AM
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#3
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Senior Member
Join Date: Feb 2014
Location: Dallas TX
Posts: 1,675
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Brevin66, I'm curious. haven't you owned the Berkshire since 2010?
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Dan
2014 Berkshire 390RB-60
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06-08-2016, 11:28 AM
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#4
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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I see that also Dan. That's a long time to not have to ad DEF.
hopefully you have found the tank. My concern is DEF does go bad. If the tank is empty no problem but if it's not you may want to siphon out the old product before you add new. Also if you have been driving it and never had to ad DEF I would have FL check it out. You should be using about a gallon every 1000 miles.
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06-08-2016, 11:35 AM
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#5
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Member
Join Date: Mar 2016
Location: Massachusetts
Posts: 96
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How long until DEF goes bad?
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John
2014 Berkshire 400BH
Motocross Dad
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06-08-2016, 11:48 AM
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#6
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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I'm not sure. I have heard lots of info about storing and unopened jugs but product in the tank is different. I would think it depends on the weather. Also if he has owned the rig since 2010 and not refilled the tank I would say it's bad. That's six years.
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06-08-2016, 12:47 PM
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#7
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Senior Member
Join Date: Aug 2013
Location: Green Bay, WI
Posts: 140
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I was at a Freightliner shop last week and one of their tech's said DEF had about a 2 year shelf life. No proof, just repeating what he said.
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Bill & Kay
Green Bay, WI
2016 FR Berkshire 38A
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06-08-2016, 01:13 PM
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#8
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Who Dares, Wins
Join Date: May 2012
Location: Chester County, PA
Posts: 7,063
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Quote:
Originally Posted by bb920
I was at a Freightliner shop last week and one of their tech's said DEF had about a 2 year shelf life. No proof, just repeating what he said.
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https://www.fcsdchemicalsandlubrican...%20Quality.pdf
This is what I saw while work truck was in for service one day.. Like yours, no proof, just what Ford said.
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Pat, Jen, Heather & Sapphire, the head mouser.
2015 Chevy HD D-Max
2022 Impression 315MB
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06-08-2016, 01:15 PM
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#9
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Senior Member
Join Date: Jun 2016
Posts: 597
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It depends on how it is being stored, if you keep it in a cool dry place like your basement then yes about 2 years, if it is in the vehicle where is gets really hot outside then it could be 6 months or less. That came directly from a diesel mechanic I know.
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06-08-2016, 01:30 PM
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#10
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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That was why I suggested dumping what he had in his tank. We don't know what the situation is with the information we have but as the LST two posts have suggested and what I have researched six years in the tank is way to long and needs to be disposed of. I wonder what is the best way to dump old DEF. I would think it's safe to go into the sewer system but I don't know that. Anyone know? I have heard that you can mix old with new and it somehow revitalizes the old but I think I read it on a forum so well you know?
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06-08-2016, 02:06 PM
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#11
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Who Dares, Wins
Join Date: May 2012
Location: Chester County, PA
Posts: 7,063
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Quote:
Originally Posted by Phil57
That was why I suggested dumping what he had in his tank. We don't know what the situation is with the information we have but as the LST two posts have suggested and what I have researched six years in the tank is way to long and needs to be disposed of. I wonder what is the best way to dump old DEF. I would think it's safe to go into the sewer system but I don't know that. Anyone know? I have heard that you can mix old with new and it somehow revitalizes the old but I think I read it on a forum so well you know?
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Isn't it just water and Urea (? PEE?) I would think the sewer would be fine
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Pat, Jen, Heather & Sapphire, the head mouser.
2015 Chevy HD D-Max
2022 Impression 315MB
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06-08-2016, 02:31 PM
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#12
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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06-08-2016, 02:33 PM
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#13
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Who Dares, Wins
Join Date: May 2012
Location: Chester County, PA
Posts: 7,063
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So maybe the sewer is NOT a good idea... Looks a bit more toxic than I thought..
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Pat, Jen, Heather & Sapphire, the head mouser.
2015 Chevy HD D-Max
2022 Impression 315MB
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06-08-2016, 02:36 PM
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#14
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Member
Join Date: Jan 2016
Location: Mechanicsburg, Pa
Posts: 85
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I have 2011 with no def. and no do not put it into the sewer not good for sewer plants
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06-08-2016, 02:45 PM
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#15
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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Quote:
Originally Posted by gussie01
I have 2011 with no def. and no do not put it into the sewer not good for sewer plants
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You must have a 2009 chassis? My 2011 has it. Mine was a October build I believe. It is built on a 2010 chassis.
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06-08-2016, 03:19 PM
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#16
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Member
Join Date: Jan 2016
Location: Mechanicsburg, Pa
Posts: 85
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No, I have a 2011 built on a 2010 chassis
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06-08-2016, 04:25 PM
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#17
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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I thought the government mandated that all diesel comply with standards for all 2010 chassis. I would think that a 2010 would have DEF. learn something new everyday.
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06-08-2016, 04:40 PM
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#18
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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Quote:
Originally Posted by gussie01
No, I have a 2011 built on a 2010 chassis
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I just double checked and the EPA mandate started Jan 1 2010 all diesels had to have DEF. I wonder how yours didn't have it.
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06-08-2016, 04:41 PM
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#19
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Member
Join Date: Jan 2016
Location: Mechanicsburg, Pa
Posts: 85
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I have a regen system on my rv
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06-08-2016, 04:43 PM
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#20
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Member
Join Date: Jan 2016
Location: Mechanicsburg, Pa
Posts: 85
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Cumming uses a regen system witch does the same as def system
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