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  1. #1
    Gold Member
    Join Date
    Apr 2012
    Posts
    274
    Location
    JACKSONVILLE, AL
    Tractor
    2011 KUBOTA L3200 W/ LOADER, BH77 BACKHOE

    Default What oil do I use?

    I have been wanting to do my next oil change on my L3200 using full synthetic oil. kubota recommends 10w30 oil in my tractor, however I was told by every mechanic I have spoken to that it does NOT have to be "Diesel Oil". I called several Kubota service departments, and every mechanic told me that I can use regular motor oil in my tractor, but really couldn't tell me what the difference is between Diesel, and gasoline motor oils other than Diesel has Zinc in it.....which doesn't mean anything to me and apparently doesn't make a difference to mechanics either. I have purchased full synthetic oil (just because I have used full synthetic in everything I own because of its superior protection) but now I'm skiddish about putting regular 10w30 (for gasoline engines) in my tractor. Anyone know what (if anything) is the big difference and is it o.k. to go ahead with the oil change?

  2. #2
    Platinum Member
    Join Date
    Apr 2007
    Posts
    576
    Location
    Northern Lower Michigan
    Tractor
    Kubota B3030HSDC

    Default Re: What oil do I use?

    Wow! What a lot of completely wrong advice.Do not use gasoline engine oil in a diesel engine.Ordinary oils don't keep soot(carbon)in suspension as well as diesel-specific oils.Soot is a by-product of diesel combustion.Diesel engine oil will also have a more robust additive package,with a little more ZDDP(zinc).
    kubota does ship their tractors with a diesel 10W30 oil.
    There are oil API ratings(the little round donut on the bottle)that indicate the oil type.SN/SM,etc. for gasoline engines-CI-4/CJ-4,etc. for diesel engines.S is for spark ignition,C is for combustion(commercial)ignition.
    Conventional oil guys like myself often use Shell Rotella 10W30 or 15W40 oil,very popular.I use the 10W30 myself here up north.
    There are plenty of fully synthetic diesel oils out there,usually 5W40 viscosity.Some examples are Shell Rotella T6,Mobil 1 turbo truck oil,Lubrigard,etc.
    You can find a suitable synthetic oil at any auto parts store,Wal-Mart,etc.Just make sure you're getting the "C"rated oil.Good Luck!

  3. #3
    Super Member 94BULLITT's Avatar
    Join Date
    Feb 2011
    Posts
    7,248
    Location
    Frederick County, VA
    Tractor
    Kubota BX2360 & L4240 HSTC

    Default Re: What oil do I use?

    Here is a link on what zinc does in a engine.

    Zinc Oil Additive - Hot Rod Magazine

    I would only use a oil a that meets or exceeds the specs for your tractor.

  4. #4
    Veteran Member MHarryE's Avatar
    Join Date
    Feb 2009
    Posts
    1,370
    Location
    Northeastern Minnesota
    Tractor
    JD 7720; Kubota M135GX, NH TS115A; JD 6230; Kubota L5740

    Default

    Zinc is also an inexpensive anti-wear additive in hydraulic oil. However it is not the only way to do the job because some oils like Hy-Tran advertise no zinc. For your engine make urge the C number matches your operator manual.
    JD7720; KubotaM135GX; NH TS115A; JD6230; KubotaL5740

  5. #5
    Veteran Member PHILIP8N's Avatar
    Join Date
    Sep 2009
    Posts
    1,210
    Location
    Indianapolis
    Tractor
    Kubota L3940 Ford 8N Ford 6000

    Default Re: What oil do I use?

    Wow, 1st bad advice on trailers, and even more bad advice on oils. Think you need to move out of Jacksonville Alabama to broaden your think pool. I suggest you drive to Houston Texas, there you will find automotive stores, or even a Walmart that will carry a modern 'C' rated 15w-40 or 5w-40 HDEO (heavy duty engine oil). There are many good brands out there, but you cannot go wrong with Shell Rotella 15w-40 or 5w-40, or Mobil Delvac 15w-40, or Mobil 1 5w-40. Worse comes to worse, go to a local Caterpillar dealer, they will have the right oil. Any TSC's, Rural King, or similar around you? Even a John Deere dealer will work. DO NOT us an oil that is ONLY 'S' rated for gasoline engines. Many HDEO oils are fleet rated, and will carry both 'S' and 'C' ratings, so do not be concerned with that. Do a search, many threads on this topic. Good luck. Philip.
    Kubota L3940HST-1 2009
    84" front blade
    LA724 loader w/quick attach
    HD 72" round back bucket
    turf tires
    Kubota GR2120 2013
    Ford 8N 1950
    Ford 6000 diesel 1961
    JD L110 2003
    Woods RD7200 finish mower, Land Pride RCR1272 rotary cutter, Bearcat CH5540 5" chipper, L8170 ballast box, 6' Woods pulverizer, 6' Dragon box scrapper with hydraulic rippers, 14" 2 bottom plow, sub-soiler, post hole auger, 3 point pallet forks, 30" rear scoop, 7' Land Pride RB1584 rear blade, 3 point boom pole

  6. #6
    Elite Member
    Join Date
    Dec 2003
    Posts
    4,854
    Location
    NC
    Tractor
    Kubota Grand L3830

    Default Re: What oil do I use?

    Aw, come on. Engine replacement or repair will be covered by warranty. After all he did say he had already purchased oil for a automobile engine. Surely you don't expect him to not use the oil and go purchase the correct oil for a Diesel engine. My...My we sure are getting picky in our endeavor to prevent engine damage.

  7. #7
    Elite Member Chilly807's Avatar
    Join Date
    Sep 2009
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    3,211
    Location
    Nova Scotia
    Tractor
    Kubota L3400DT

    Default Re: What oil do I use?

    Pretty much what the other guys are saying.. number two has nailed it down. Automotive oils aren't formulated for diesel use. The "C" API rating is what you should be looking for. I also use the 10w30 conventional diesel-rated oil, under normal operating conditions and without a turbo I don't personally see the need for a synthetic, plus I'm noted for spending as little as possible to get good results I do find it unusual that kubota doesn't at least specify which synthetic you can use if you choose to go that way.

    If it were me I'd return the synthetic you bought.

    Sean

  8. #8
    Silver Member
    Join Date
    Nov 2011
    Posts
    106
    Location
    Red Springs, NC
    Tractor
    Kubota L3700SU

    Default Re: What oil do I use?

    I run 15-40 like the others stated with a diesel rating. Not synthetic.

  9. #9
    Bronze Member
    Join Date
    Jan 2010
    Posts
    99

    Default Re: What oil do I use?

    My BX23 called for CF (IIRC). I wanted Mobil 1, and could not find a CF or better rated oil by the bottle markings. I call Mobile 1 and the guy said CF was an old and superseded rating and they just didn't put it on the bottle anymore. The guy showed me where to find it in the web, and the Mobile 1 was CF rated, just not printed on the bottle anymore. Hope that helps.

  10. #10
    Elite Member Chilly807's Avatar
    Join Date
    Sep 2009
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    3,211
    Location
    Nova Scotia
    Tractor
    Kubota L3400DT

    Default Re: What oil do I use?

    Quote Originally Posted by tshep View Post
    My BX23 called for CF (IIRC). I wanted Mobil 1, and could not find a CF or better rated oil by the bottle markings. I call Mobile 1 and the guy said CF was an old and superseded rating and they just didn't put it on the bottle anymore. The guy showed me where to find it in the web, and the Mobile 1 was CF rated, just not printed on the bottle anymore. Hope that helps.
    This seems to happen quite a bit, the kubota requirement doesn't reflect the new oils in production today. Probably because the manuals haven't been updated in years. One exception is the CJ-4 rating, my manual specifically tells you NOT to use it, which is funny because the Kubota branded oil is now CJ-4 rated.

    To the best of my knowledge, it was a combination of the way CJ-4 rated oils keep carbon and soot in suspension and use of low sulfur fuels (off road diesel) in relation to oil change intervals.

    Sean

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