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Motor oil recommendations

Discussion in 'Mechanic and Repair' started by qualitylawnlc, Apr 7, 2007.

  1. qualitylawnlc

    qualitylawnlc LawnSite Member
    Messages: 40

    I have an eXmark with a 15hp kaw. I've been using rotella sae 30, which is the recommended weight for this engine. I had someone tell me today that this was a poor choice. I've always used rotella in all of my air cooled engines. What do you think?
  2. T'S lawncare

    T'S lawncare LawnSite Member
    Messages: 28

    your manual probably says use straight 30 depending on outside temp. And thats a safe choice for summer applications, I wouldn't worry about it,
  3. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Messages: 943

    I think "someone" doesn't know what they are talking about.
    "Diesel" oils tend to have higher levels of anti-wear/scuff additives vs "auto" oils. Some of these additives "kill" catalytic converters, so they aren't used in autos.
    I personally like DELO 400, but Rotella is very good too.
    I think the Diesel oils are GREAT for small engines.

    The main thing is to change it when needed and most any detergent oil will do a good job.
  4. Sammy

    Sammy LawnSite Bronze Member
    Messages: 1,734

    A poor choice because of the brand or weight of the oil ?
  5. qualitylawnlc

    qualitylawnlc LawnSite Member
    Messages: 40

    The weight is as recommended, I was told that diesel oil was just a poor choice. Before I used it in the Kaw, I made sure it met the SH/SJ ratings which it does. I'll keep using it.
  6. mini14

    mini14 LawnSite Member
    Messages: 236

    s ratings are for gas engines, s=spark

    c ratings are for diesels, c=compression

    any dino diesel oil with s rating will be better then a dino gas engine oil. lots more addatives, and it wont clog cats if it has any s rating...never seen a cat on a mower.
  7. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    It won't be long before you do, They are in the works as we type.

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