'14-up X7xx Diesel question
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    '14-up X7xx Diesel question

    I'm in need of a little edumacation please. While browsing some used X750's I noticed that the 2013 X750's had the traditional red fuel cap. The 2014 and newer X750's got a black with green center fuel cap. Was anything changed engine/emission wise after 2013? Plese dont tell me you have to use exhaust fluid in them.....

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    Quote Originally Posted by posi View Post
    I'm in need of a little edumacation please. While browsing some used X750's I noticed that the 2013 X750's had the traditional red fuel cap. The 2014 and newer X750's got a black with green center fuel cap. Was anything changed engine/emission wise after 2013? Plese dont tell me you have to use exhaust fluid in them.....
    Green means it is approved for bio-Diesel.

    Did they change anything, or just do additional testing? I have no idea.
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    You don't need diesel exhaust fluid.
    Ron
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    Quote Originally Posted by posi View Post
    Plese dont tell me you have to use exhaust fluid in them.....
    You have to get up to a 5-series utility tractor before DEF is needed.
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    Quote Originally Posted by Kennyd View Post
    You have to get up to a 5-series utility tractor before DEF is needed.
    Give it time. I am sure they will eventually require it on anything diesel someday.
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    I was watching Liebherr videos from Bauma (Building Machinery) 2019 show in Germany and they mentioned some of their new engines are Tier 5 rated. I don't know what's all involved with the emissions requirements of each tier; but I suspect the higher the number, the higher the price and complexity.
    I have more ideas than ambition.


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    Tier 4 regulations exempt engines under 24 horsepower. There are some additional off-highway diesel engine exemptions that affect specific markets.
    •Engines used in railway locomotives, those are subject to separate EPA regulations.
    •Engines used in marine vessels, those are subject to separate EPA regulations.
    •Engines used in underground mining equipment, these are regulated by MSHA (Mine Safety and Health Administration).
    •Hobby engines (below 50 cubic cm per cylinder).

    What Are Tier 4 Diesel Engine Standards And How Do They Affect You? | CrossCo

    If you ever wondered why you only have a 24hp diesel in a lot of equipment that's why.


    Tier 5 doesn't exist yet as a standard in the US but someday it will.

    EU US Emission Standards For Diesel Engines In Forest Machines | Forestry.com
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    Quote Originally Posted by rydplrs View Post
    Green means it is approved for bio-Diesel.

    Did they change anything, or just do additional testing? I have no idea.
    So did the other gas cap colors have a meaning? Red, black, green, black with green insert?

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    Red had always been diesel up until the black/green that I asked about. Black= gas.

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    The serial number break on the machines to determine which fuel cap applies is up to and through -020000 takes cap number AM123058 and serial number -020001 and higher takes cap number AM144789.

    As usual, it appears Deere makes the changes more based upon the serial number than the model year.

    While the green fuel caps indicate the machines can run on Biodiesel, I would avoid using Biodiesel like it was a plague. Biodiesel typically contains 6.5 to 10 TIMES the amount of Moisture in suspense than traditional diesel fuel.

    https://pubs.acs.org/doi/abs/10.1021/je300279c

    Biodiesel will actually begin the process of "filter plugging" at temperatures ABOVE freezing due to the moisture content.

    Water and diesel do not mix, at least not well..........I will run Bio diesel ONLY when no other diesel is available. And I will drive to get "real diesel", as it is higher in cetane, higher in energy production when it burns, has a lower filter plugging point.

    Water is corrosive and alcohol is even worse. After all, water is used in water jets to cut steel......

    Google Image Result for https://image.slidesharecdn.com/modelseminarpresentation-171209124337/95/biodiesel-seminar-presentation-11-638.jpg?cb=1512824029

    Alcohol is very corrosive on injectors, injector pumps, etc. and requires the use of top oil lubricants.

    No Biodiesel for me and my machines....................

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