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Thread: WVO in a Cat 3116

  1. #11
    Join Date
    Jan 2011
    Northern Michigan
    Thanked 10 Times in 7 Posts

    Default WVO or WMO?

    I see these two interchange a lot. I'm not sure I can always catch the difference in application. But I believe there can be a BIG difference in the outcome. I'm by far anything close to an expert on the subject and I don't have any experience with WMO at all. That all being said...during warmer weather I burn WVO mixture in a Cummins. I even use a mix in John Deere and New Holland farm tractors. If any concernable difference...there maybe a slight loss of power. The WVO is first filtered through a cotton filter to remove all the big stuff such as the french frys and such, mixed with diesel fuel, then power filtered down through six micron filters in a pump system. Please, help me by keeping the two different fuel types seperate, while I learn what I can do and what will harm what I'm trying to use them in. Thanks a bunch for all your experiences.

  2. #12
    Join Date
    Feb 2011
    Thanked 7 Times in 3 Posts


    Myself, personally... I would be a wee bit leery of running unprocessed (unesterified) WVO/UMO in a nice-almostnew-shiney-cat. With that being said, I did a little digging a couple months agao on CAT's stance on biodiesel -This is what I had found in an RV forum (Unfortunately I cant remember the URL, but the PDF they had supplied gives this document# SEBU6250-14 in the upper left & is excerpted from "Caterpillar Machine Fluids Recommendations":

    Warranty and the Use of Biodiesel in
    Caterpillar Engines
    Caterpillar neither approves nor prohibits the use
    of biodiesel fuels. Caterpillar is not in a position
    to evaluate the many variations of biodiesel and
    the long term effects on performance, durability, or
    compliance to emissions standards for Caterpillar
    products. The use of biodiesel does not affect the
    Caterpillar warranty for materials and the warranty for
    Failures that result from the use of any fuel are
    not Caterpillar factory defects. Therefore, the cost
    of repair would NOT be covered by a Caterpillar
    Recommendation for the Use of Biodiesel
    in Caterpillar Engines
    For Caterpillar ACERT Technology engine model
    numbers C7, C9, C11, C13, C15, C18, and also
    for Caterpillar 3046, 3064, 3066, 3114, 3116, 3126,
    3176, 3196, 3208, 3306, C-9, C-10, C-12, 3406,
    C-15, C-16, C-18, 3456, 3408, 3412, 3500 Series,
    3600 Series, CM20, CM25 and CM32 engines,
    biodiesel that meets the requirements that are listed
    in the Caterpillar specification for biodiesel, ASTM
    D6751, or EN 14214 are acceptable. Biodiesel may
    be blended in amounts up to a maximum of 30
    percent with an acceptable diesel fuel. This blend is
    acceptable provided that the biodiesel constituent
    meets the requirements that are outlined in Table 15
    prior to blending. In addition, the final blend must
    meet the requirements for distillate diesel fuel that
    are listed in Table 13.
    A complete Caterpillar S·O·S Services Oil

    Analysis program is recommended when
    using biodiesel blends of up to 30 percent.
    For blends of biodiesel above 30 percent,
    contact your Caterpillar dealer for guidance. A
    complete Caterpillar S·O·S Services Oil Analysis
    program is required when biodiesel/biodiesel blends
    above 30 percent are used. Biodiesel/biodiesel
    blends as used in the engine must meet the
    requirements that are stated in the “Caterpillar
    Specification for Distillate Diesel Fuel” in Table 13.
    For Caterpillar 3003 through 3034, 3054 and 3056
    engines, biodiesel that meets the requirements that
    are listed in Caterpillar’s biodiesel specification,
    ASTM D6751, or EN 14214 may be blended with
    an acceptable diesel fuel. This blend should be
    a maximum ratio of 5% biodiesel to 95% of an
    acceptable diesel fuel. The biodiesel must meet
    the requirements that are listed in Table 15 prior to
    blending. Use of more than a 5% biodiesel can cause
    premature failures. The repair for these failures would
    not be covered under the Caterpillar warranty.

    When biodiesel, or any blend of biodiesel is
    used, the user has the responsibility for obtaining
    the proper local exemptions, regional exemptions,
    and/or national exemptions that are required for
    the use of biodiesel in any Caterpillar engine that
    is regulated by emissions standards. Biodiesel that
    meets the requirements that are listed in Caterpillar’s
    specification for biodiesel, ASTM D6751, or EN
    14214 should pose no problems when blended
    with an acceptable distillate diesel fuel at the
    maximum stated percentages, however, the following
    recommendations must be followed:

    The oil change interval can be affected by the use
    of biodiesel. Use S·O·S Services Oil Analysis in
    order to monitor the condition of the engine oil.
    Use S·O·S Services Oil Analysis also in order to
    determine the oil change interval that is optimum.

    In a comparison of distillate fuels to biodiesel,
    biodiesel provides less energy per gallon by 5% to
    7%. Do NOT change the engine rating in order to
    compensate for the power loss. This will help avoid
    engine problems when the engine is converted
    back to 100 percent distillate diesel fuel.

    Compatibility of the elastomers with biodiesel is
    currently being monitored. The condition of seals

    and hoses should be monitored regularly.

    Biodiesel may pose low ambient temperature
    problems for both storage and operation. At low
    ambient temperatures, fuel may need to be stored
    in a heated building or a heated storage tank. The
    fuel system may require heated fuel lines, filters,
    and tanks. Filters may plug and fuel in the tank may
    solidify at low ambient temperatures if precautions
    are not taken. Consult your biodiesel supplier for
    assistance in the blending and attainment of the
    proper cloud point for the fuel.

    Biodiesel has poor oxidation stability, which can
    result in long term storage problems. The poor
    oxidation stability may accelerate fuel oxidation in
    the fuel system. This is especially true in engines
    with electronic fuel systems because these engines
    operate at higher temperatures. Consult the fuel
    supplier for oxidation stability additives.

    Biodiesel is an excellent medium for microbial
    contamination and growth. Microbial contamination
    and growth can cause corrosion in the fuel
    system and premature plugging of the fuel filter.
    The effectiveness of conventional anti-microbial
    additives when used in biodiesel is not known.
    Consult your supplier of fuel and additive for

    Care must be taken in order to remove water
    from fuel tanks. Water accelerates microbial
    contamination and growth. When biodiesel is
    compared to distillate fuels, water is naturally more
    likely to exist in the biodiesel.

    Caterpillar Biodiesel
    Note: The final blend of biodiesel as used in
    the engine must meet the requirements that
    are stated in the “Caterpillar Specification for
    Distillate Diesel Fuel” in Table 13.
    The footnote is a key part of the “Caterpillar Specification
    for Biodiesel Fuel” Table. Read the footnote.

    Below they give a fairly large table of spec's used to quantify "quality" biodiesel fuel that they say is kosher, most of the ASTM spec's look fairly boilerplate to me (Keep in mind, Im no petrochemical engineer here) like fairly standard diesel spec's, for the exception of the "Esterification" field (Obviously, since this is specific to biodiesel), which they have spec'd out at 98% & the "Methanol Content" field, which they have spec'd out at 0.2% Max (Since this is part of the catalyst used to transesterify the oil).

  3. #13
    4 Star General coachgeo's Avatar
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    Nov 2010
    North of Cincy OH
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    Quote Originally Posted by UNIMOG-GUY View Post
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    One does not get troubles in life... just character building opportunities. Build on with a smile

    Moderator: Orange Tractor Talks & AmbulanceRV

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  4. #14
    4 Star General snowtrac nome's Avatar
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    Nov 2016
    western alaska
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    I personally wouldn't do it unless it was and emergency but a bio blend properly filtered should be ok. because of the carbon in used engine oil I would not do it period. The other thing to remember is your fuel system is intended for a certain viscosity. get your fuel too thin or thick bad things happen maybe not immediately but over the long run the money saved on using a free alternative fuel will be gobbled up buying fuel injection components. in the past with my b series cummins I have bought ve injection pumps and injectors because of this. my truck is my bread and butter I cant afford to be working on it when I can be working on some one else's for money

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