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  1. #1
    Join Date
    Aug 2002
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    145

    Default questions about diesel exhaust fluid ?

    The owners manual on the duramax says a message will appear showing low D E F. If not refilled after 40 miles truck will be limited to 55m.p.h. & if not refilled within 200 miles it will shut down! So i bought a gallon at the dealer before i towed the racecar to norwalk. The truck had about 3K miles at that time. It's showing about 4K miles now. I still haven't added any fluid to the 5 gallon resevoir. I'm trying to establish how far a full tank will take me? I paid 15$ for a gallon at the dealer is that reasonable,or should i buy it elsewhere? Any specs i should pay attention to? Thanks for any input.

  2. #2
    Join Date
    Feb 2010
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    Framingham, Ma
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    2,812

    Default Re: questions about diesel exhaust fluid ?

    If I remember right the new trucks running exhaust fluid are actually just spraying sheep piss into the exhaust system to nuetralize nox emissions.
    "To achieve great things, two things are needed: a plan, and not quite enough time."
    --Leonard Bernstein

  3. #3
    Join Date
    May 2003
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    onoway,alberta
    Posts
    1,352

    Default Re: questions about diesel exhaust fluid ?

    Rick
    messages start to appear with approx 1000 miles worth remaining to give you ample to to refill.cost here at GM dealer is $12.25cdn for 1 us gallon.
    ken mcdonald
    65 skylark,455,work in progress
    1973 buick century luxus,u code 455
    bpg# 1438

    life should not be a journey to the grave with the intention of arriving safely in an attractive and well preserved body,but rather to skid in sideways,a jug of "crown" in one hand,a case of "24" in the other,body thoroughly used up,totally worn out and screaming "WOO HOO what a ride!

  4. #4
    Join Date
    Feb 2002
    Location
    Twin Cities, MN
    Posts
    6,434

    Default Re: questions about diesel exhaust fluid ?

    Having never heard of the stuff, (reminds me of turn signal fluid) I did a Google search and found that O'Reilly's sells the stuff for $4.99 a gallon.


    Sheep piss.
    Dale

    Current Buicks...None. :-(
    Past Buicks. '66 Riv / '70 Rivs (2) / '90 Riv / '72 Skylark / '72 LeSabre / '72 Electra / '96 LeSabre / '92 Park Ave. / '96 Riviera.

    "The guy who invented the first wheel was an idiot. The guy who invented the other three, he was a genius.". Sid Caesar

  5. #5
    Join Date
    Mar 2005
    Location
    Orlando Florida
    Posts
    6,011

    Default Re: questions about diesel exhaust fluid ?

    Saturday Power Block TV
    On the Trucks show, they went though a new Ford Diesel pickup and mentioned urea injection that sprays the exhaust to reduce emissions....

    The last comment Kevin Tetz made about it was...
    "Yes, urea is in your pee, and No, you cannot pee in the tank"
    Curtis
    ______________


    1970 GS 455 4-Speed
    1972 GS 350 Convertible (SOLD)

    My Blog http://72buickgs.blogspot.com/

    My Buick Facebook Page https://www.facebook.com/groups/BuickGSOwners/

    "Whether you think that you can, or that you can't, you are usually right"

  6. #6
    Join Date
    Oct 2002
    Location
    Small town , Iowa
    Posts
    5,909

    Default Re: questions about diesel exhaust fluid ?

    The new Semi Truck diesels use that stuff also . Truck stops sell it and it should be cheaper than a dealer , I would think .

    I wouldn't want to run out of that stuff if it were my motor . My Cat is an 06 so I have none of that new chit ..

    Goog Luck and have fun !!
    Bruce and Shirley
    bdurband@gmail.com




    Independent Trucker hauling refrigerated foods all over the USA !

    Owner / Operator of long Way Home Transportation

  7. #7
    Join Date
    Feb 2002
    Location
    Oakland Gardens, N.Y.
    Posts
    21,410

    Default Re: questions about diesel exhaust fluid ?

    Larry
    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    1967 BT Switchpitch ST-400, Gear Vendors OD
    with TSP 3200/1800 converter
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's
    11.67 @ 115.49 MPH
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  8. #8
    Join Date
    Nov 2005
    Location
    Medway, MA
    Posts
    8,217

    Default Re: questions about diesel exhaust fluid ?

    When I started reading this thread, I thought that you would buy Diesel Exhaust Fluid at the same place that you would buy upper foreskin bushings. Diesel Exhaust Fluid? OMG!
    John Codman
    Formerly owned Buicks:
    '33,'48, '51, '52, '54, '55 (3), '56, '60 LeSabre 3 sp stick.
    264 powered '53 Mercury
    322 then 264 powered 55 Ford
    264 powered '56 Chevy
    Presently - 431 nailhead powered '82 C-10

  9. #9
    Join Date
    Feb 2010
    Location
    Framingham, Ma
    Posts
    2,812

    Default Re: questions about diesel exhaust fluid ?

    Just for emissions. If you can figure out how to trick the computer into thinking it's always full than you shouldn't have any real worries. If they use it to also cool the turbos or anything than it would be more of a concern. Otherwise it's just like an air pump but with pee.

    32.5% pee to water if I'm not mistaken. So have fun with that
    "To achieve great things, two things are needed: a plan, and not quite enough time."
    --Leonard Bernstein

  10. #10
    Join Date
    Mar 2004
    Location
    Elmhurst, IL
    Posts
    6,193

    Default Re: questions about diesel exhaust fluid ?

    It really depends on the distance you drive and your driving styling. But typically a tank on the GM's last 5K miles or so. Your DIC should indicate "exhaust fluid" range starting when you have 1000 miles remaining of DEF. There is also a light on in the cluster that will illuminate when your def tank is low.

    There is ammonia in the DEF that reacts with the bad gases to release N and H20.

    $15 is reasonable.

    FWIW, you couldn't simply trick it by telling the computer its full. When the PCM requests the DEF to be injected, it will watch sensors to ensure that the DEF system is in fact operational. If no changes are seen the MIL will come on. Otherwise how could it know that its not putting out 1.5X emissions levels?
    Rob

    1971 Buick Electra 225 Custom Limited 4dr, 56,934 miles
    1995 Buick Park Avenue
    BPG #2020

  11. #11
    Join Date
    Feb 2007
    Location
    Houston, TX
    Posts
    4,989

    Default Re: questions about diesel exhaust fluid ?

    Why not just put water in the tank? It couldn't be that easy though.
    Cason P.
    71 Skylark 350-4V
    Hooker Headers
    Ken G. 1973 Q-Jet
    D5 GN Converter/200R4
    3.42 Posi Rear
    In Development:
    Either this Car kills me, or I kill the car first!

  12. #12
    Join Date
    Jul 2007
    Location
    Greensboro, nc
    Posts
    3,868

    Default Re: questions about diesel exhaust fluid ?

    So... Has anybody tried peeing in it .. Gotta go somewhere..
    Jay Davenport
    72 GS 355.. FOR SALE
    71 Skylark 355 Mark Burton Twin Turbo 7.67@ 92.1 W/2.01 60ft Ecoboosted SOLD

    If you don't expect too much from me, you might not be let down..

  13. #13
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    Feb 2002
    Location
    Oakland Gardens, N.Y.
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    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by jay3000 View Post
    So... Has anybody tried peeing in it .. Gotta go somewhere..
    If only it was that easy. Urine is over 95% water. Urea is just one small part of urine.
    Larry
    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    1967 BT Switchpitch ST-400, Gear Vendors OD
    with TSP 3200/1800 converter
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's
    11.67 @ 115.49 MPH
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  14. #14
    Join Date
    May 2010
    Location
    Southwest Ohio
    Posts
    2,315

    Default Re: questions about diesel exhaust fluid ?

    I seriously thought when I saw this heading it was a joke and you were gonna ask about some muffler bearings next!! Shows how much I know about diesels, I'd bet I couldnt even find the spark plugs in one....
    Shawn
    "I drive too fast to worry about my cholesterol..."
    -72 Skylark project "Rusty Hulk"-
    BPG #2288

  15. #15
    Join Date
    Dec 2005
    Location
    Long Island, NY
    Posts
    497

    Default Re: questions about diesel exhaust fluid ?

    Don't worry about it for local stuff at all. I have a new Ford and it uses this stuff as well. As recomended to me by another member here to have a few gallons around for long hauls and he was right!!!! We went coast to coast and went through almost 2 full tanks of the stuff.

    Also don't count on gas stations and truck stops having it yet. On the way back we had a hard time finding some.

    As a note here we had a 9000lb enclosed trailer on the back of the truck and averaged 80mph for most of the trip.
    Nick A.
    1971 Skylark formerly stock 350 with 125 shot
    12.67 @104 on BFG Drag radials
    12.47@107.5 on Slicks
    FUEL INJECTED!!!!
    BPG #1445
    1987 Shelby CSX 561
    1988 Shelby CSXt 471 (12.2 at 116)

  16. #16
    Join Date
    Oct 2004
    Location
    Houston / Galveston
    Posts
    4,141

    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by LARRY70GS View Post
    If only it was that easy. Urine is over 95% water. Urea is just one small part of urine.

    The mixture misted into the exhaust system is called diesel exhaust fluid (DEF) and is composed of 32.5 percent industrial urea and 67.5 percent deionized water.

    Read more: What Is Urea Injection? | eHow.com http://www.ehow.com/about_6691051_ur...#ixzz1PIVwfo2K
    The percentages aren't that far off....

  17. #17
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    Feb 2002
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    Oakland Gardens, N.Y.
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    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by r0ckstarr View Post
    The percentages aren't that far off....

    Someone will come up with a process for converting their own I'm sure.
    Larry
    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    1967 BT Switchpitch ST-400, Gear Vendors OD
    with TSP 3200/1800 converter
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's
    11.67 @ 115.49 MPH
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  18. #18
    Join Date
    Feb 2007
    Location
    Houston, TX
    Posts
    4,989

    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by r0ckstarr View Post
    The percentages aren't that far off....
    Consume nothing but coffee and asparagus. That aught to make some good DEF.
    Cason P.
    71 Skylark 350-4V
    Hooker Headers
    Ken G. 1973 Q-Jet
    D5 GN Converter/200R4
    3.42 Posi Rear
    In Development:
    Either this Car kills me, or I kill the car first!

  19. #19
    Join Date
    Jul 2007
    Location
    Greensboro, nc
    Posts
    3,868

    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by LARRY70GS View Post
    Someone will come up with a process for converting their own I'm sure.
    Is that re-using or re-cycling?? Or re-using something that was re-cycled?? I'm so confused
    Jay Davenport
    72 GS 355.. FOR SALE
    71 Skylark 355 Mark Burton Twin Turbo 7.67@ 92.1 W/2.01 60ft Ecoboosted SOLD

    If you don't expect too much from me, you might not be let down..

  20. #20
    Join Date
    Jul 2004
    Posts
    5,481

    Default Re: questions about diesel exhaust fluid ?

    This explains why the older diesel pickups still command a helluva price. I need a new truck and want a diesel. No way will I get something that has to have a piss fluid tank refilled every 5K miles. Especially @ $15 a gallon. WTF are these people thinking?? Technology sure is going backwards.

  21. #21
    Join Date
    Sep 2004
    Location
    Michigan, USA
    Posts
    14,959

    Default Re: questions about diesel exhaust fluid ?

    They're "thinking" they can both adhere to the EPA requirements and actually tune the engine for even more output and better mpg...BUT, to enjoy the extra output and mpg, you have to buy the fluid.

    And if you don't, then you have to buy an older truck with less output which means more dollars per ft-lbs in the end.

    Devon
    Fuel & Brake Systems Engineer
    "I can live with doubt and uncertainty and not knowing. I think it's much more interesting to live not knowing than to have answers which might be wrong." - Feynman
    "Good data is precious. The problem I have is when some damned fool fails to use it properly." - Slingerland

  22. #22
    Join Date
    Feb 2010
    Location
    Framingham, Ma
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    2,812

    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by DaWildcat View Post
    They're "thinking" they can both adhere to the EPA requirements and actually tune the engine for even more output and better mpg...BUT, to enjoy the extra output and mpg, you have to buy the fluid.

    And if you don't, then you have to buy an older truck with less output which means more dollars per ft-lbs in the end.

    Devon
    Remember that you're still buying the same amount of gas, plus now the pee. That makes the new trucks cost more to run. Plus remember you're also now carrying the tank of fluid and the extra wiring and sensors and tubing. In the end you have more weight and more technology to deal with, along with the extra costs. By the way, pee can be corrosive, so don't let your truck sit too long with fluid in it or you may be replacing the tank and lines quickly.

    And to think that all the countries that run diesels in everything don't go through this crap and they have lower polution levels . I wish this country never had them dang hippies. Them and lawyers screw it up for everyone else.
    "To achieve great things, two things are needed: a plan, and not quite enough time."
    --Leonard Bernstein

  23. #23
    Join Date
    Sep 2004
    Location
    Michigan, USA
    Posts
    14,959

    Default Re: questions about diesel exhaust fluid ?

    Quote Originally Posted by bammax View Post
    Remember that you're still buying the same amount of gas, plus now the pee. That makes the new trucks cost more to run. Plus remember you're also now carrying the tank of fluid and the extra wiring and sensors and tubing. In the end you have more weight and more technology to deal with, along with the extra costs. By the way, pee can be corrosive, so don't let your truck sit too long with fluid in it or you may be replacing the tank and lines quickly.
    I always enjoy our back & forth!

    In case you missed it, mpg = miles per gallon. And you also missed the part about dollars per performance.

    And by the way, the sheep piss doesn't sit in your fuel tank or fuel lines. It's injected into the exhaust stream after combustion, so you won't get the full flavor of it unless you're kissing the exhaust pipe...not recommended unless you're into that sort of thing!

    Devon
    Fuel & Brake Systems Engineer
    "I can live with doubt and uncertainty and not knowing. I think it's much more interesting to live not knowing than to have answers which might be wrong." - Feynman
    "Good data is precious. The problem I have is when some damned fool fails to use it properly." - Slingerland

  24. #24
    Join Date
    May 2011
    Location
    Wichita Falls, TX
    Posts
    573

    Default Re: questions about diesel exhaust fluid ?

    It's more EPA meddling, forcing the automakers to conform to almost unattainable emissions and mileage gains. I am a huge diesel fan; I own an 06 2500HD Duramax and a 2011 VW Toureg. They both have great engines, the Chevy has no emissions equipment and the Toureg has the particulate filter and urea injection. The Toureg's exhaust has nary a trace of soot, and very light odor... but then again my Duramax has very low soot compared to other makes and models. You only get black smoke if you floor it. Does the technology work? Yeah I guess so, but at what point are we spending so much money and putting so much crap onto these engines that we are just creating more problems. My VW is supposed to go 10000 miles on a tank of urea. The engine will lockout if you run out. Guess what happened the other day? I got a false low urea warning after only 2000 miles. What if the tank quantity sensor fails? You are stuck. We should be focused on bringing more diesels into the market. The diesel energy cycle is up to 30% more efficient than the gasoline Otto cycle. Why America has resisted cheap efficient diesel is beyond me. Instead we adopted low sulfur diesel, which is a horrible fuel blend with low lubricity that costs oodles more to produce. Go figure.
    Ryall
    1972 GS Clone w/ a 1970 SF coded 455

  25. #25
    Join Date
    Dec 2007
    Location
    Oxnard Harbor
    Posts
    480

    Default Re: questions about diesel exhaust fluid ?

    Wow, my rate here in the Seabees is a Construction Mechanic, and all we work on are diesels, and I have NEVER heard of that! Then again, all our Humvees and MTVRs have the "emissions regulation exempt" placard (and we burn jp-8 out here), hence why I have never heard of Sheep's piss. That is so strange! That is exceptionally frustrating that people who have no clue about a diesel would legislate insanity like that. Diesels were originally designed in the late nineteenth century to run on coal dust!

    /rant

    KFD

    Kelly F*$%!n' Doke.
    2003 Aprilia RSV Mille 1000.
    2002 BMW StreetCarver Skateboard.
    1970 AO-Code Rallye wheel. Yep, just one.
    1981 Toyota Celica, purchased new by my great uncle.
    ...And there were a few Buicks and Mopars that are long gone.

    *Hey iggycat, I still want that speedo!!

 

 
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