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08-08-2013, 11:22 AM
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#1
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Registered User
Join Date: Apr 2013
Location: rancho mirage CA
Posts: 170
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DEF
I have been reading on this site about DEF I googled it and found out what it is. My question is this just for new MH I just purchased a 2007 Monaco Beaver with a CAT9 400 hp and I don't have a DEF tank at least not that I know of
Jim
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08-08-2013, 11:29 AM
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#2
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Senior Member
Join Date: Apr 2012
Location: Pueblo, CO
Posts: 624
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Don't think DEF was required on most until 2010 or later.
__________________
2009 Berkshire 390 QS and toad
Retired and traveling
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08-08-2013, 11:34 AM
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#3
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jul 2011
Posts: 1,173
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http://www.cumminsfiltration.com/pdf...es/MB10033.pdf This link will better explain SCR systems that use DEF. I don't believe your coach uses DEF and never ever add DEF to diesel fuel. DEF is injected into the exhaust system to reduce pollutants. When the US Government mandated these emission reductions, Caterpillar dropped out of the over the road Diesel engine business.
Mike
__________________
NHSO
2021 DSDP 4081
2016 DSDP 4369
2012 DSDP 3734
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08-08-2013, 11:36 AM
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#4
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Senior Member
Entegra Owners Club
Join Date: Apr 2011
Location: Estero, FL
Posts: 2,515
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Quote:
Originally Posted by no3putt
Don't think DEF was required on most until 2010 or later.
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Exactly.
If you had it, you would know it.
__________________
Gary & Leigh
2019 Entegra Cornerstone 45Y,
2010 Seneca, 2011 & 2014 Anthem, 2017, 2018 Cornerstone(All Sold)
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08-08-2013, 11:38 AM
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#5
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jul 2011
Posts: 1,173
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Quote:
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Originally Posted by Nowabeachbum
Exactly.
If you had it, you would know it.
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Yep! You have a separate tank for DEF and a gauge on your dash to show fluid level.
__________________
NHSO
2021 DSDP 4081
2016 DSDP 4369
2012 DSDP 3734
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08-08-2013, 11:43 AM
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#6
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Registered User
Join Date: Apr 2013
Location: rancho mirage CA
Posts: 170
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OK thanks for the info one less thing to worry about in regards to this complicated monster I just bought
Jim
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08-08-2013, 09:16 PM
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#7
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Senior Member
Join Date: May 2011
Location: Cookeville, TN
Posts: 778
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Quote:
Originally Posted by jmoffat
I have been reading on this site about DEF I googled it and found out what it is. My question is this just for new MH I just purchased a 2007 Monaco Beaver with a CAT9 400 hp and I don't have a DEF tank at least not that I know of
Jim
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Caterpillar's approach to emissions requirements was to introduce the ACERT engine series. Advanced Combustion Emissions Reduction Technology. For some CAT engine models it can be seen as compound turbochargers, a low pressure stage feeding a high pressure stage plus variable valve timing. All to get more air into the cylinders. It is a complicated system, hence they dropped out of the on-highway market a few years ago. CAT has never used EGR, exhaust gas recirculation like Cummins and others.
Diesel exhaust fluid is 32.5% urea in ultra pure water. The urea solution is sprayed into the exhaust ahead of the catalyst to break convert oxides of nitrogen into less invasive components. It is currently, the most popular method of meeting US EPA emission requirements.
__________________
Spike45
Gary Spires
Retired Cummins (Fleetguard) Field Engineer
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08-12-2013, 05:55 AM
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#8
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Member
Join Date: May 2013
Posts: 96
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bottom line is DEF is not used in cat engines
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08-12-2013, 06:01 AM
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#9
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: Port Charlotte Florida
Posts: 2,721
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Quote:
Originally Posted by laurel moore
bottom line is DEF is not used in cat engines
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Is this method used in pick-up truck engines, Dodge, GM, or Ford?
__________________
[SIGPIC][/SIGPIC]2008 Bounder 38P F53 24/30K V10, 2013 Kia Soul Basic 6 speed manual, Ready Brake Elite tow system (previous equipment 1996 Pace Arrow Vision w/Acme Dolly)
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08-12-2013, 06:39 AM
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#10
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Moderator Emeritus
Jayco Owners Club RV Trip Wizard
Join Date: Oct 2009
Location: Poinciana FL
Posts: 7,781
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Quote:
Originally Posted by Brockx
Is this method used in pick-up truck engines, Dodge, GM, or Ford?
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Newer ones, yes.
__________________
Jay and Peggy Monroe
"Can't take it with you, not leaving any behind"
2024 Jayco White Hawk 26FK
2024 Ford Expedition
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08-12-2013, 08:44 AM
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#11
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: Port Charlotte Florida
Posts: 2,721
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Quote:
Originally Posted by JMonroe
Newer ones, yes.
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I have been considering a new PU with Diesel power, sounds like a pain.
What is the expense?
__________________
[SIGPIC][/SIGPIC]2008 Bounder 38P F53 24/30K V10, 2013 Kia Soul Basic 6 speed manual, Ready Brake Elite tow system (previous equipment 1996 Pace Arrow Vision w/Acme Dolly)
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08-12-2013, 08:55 AM
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#12
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Senior Member
Thor Owners Club Freightliner Owners Club
Join Date: Aug 2011
Location: Jamestown, NC
Posts: 1,579
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Quote:
Originally Posted by Brockx
I have been considering a new PU with Diesel power, sounds like a pain.
What is the expense?
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If you fill up at a truck stop that has DEF at the pump, it is around $2.80/gal. If you buy it in 2.5 gal containers, it is about $12-$13 for that.
__________________
Gary and Kay & Chipper
2018 Thor Tuscany 38SQ
2019 Ford Ranger XLT Super Crew
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08-12-2013, 09:05 AM
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#13
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Senior Member
Commercial Member
Join Date: Aug 2012
Posts: 726
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I've got a 2012 Silverado 3500 that requires DEF. it uses about 2 1/2 gal every 4 to 5 thousand miles. Each 2 1/2 gal container is about $13 depending where you buy. The pain is keeping it on hand. I always carry at least one in case I'm out somewhere that it's not easy to find. The warning system on this vehicle is not the best. Seems to warn when 500 miles are left but after that warning to mile left seem to go down faster than the actual mileage. You just need to learn the quirks of whatever vehicle you buy.
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08-12-2013, 11:10 AM
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#14
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Senior Member
Foretravel Owners Club
Join Date: Apr 2010
Posts: 511
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Lauren, Cat has not made a EPA engine in years, so the DEF. is sure not required on antique engines.
__________________
Foretravel, 2001, 36' ISM500 "Hot Rod"
F150 w/EZ Golf Cart or
CanAM 800 Max Limited ATV
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