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  1. #1

    Smile Sea Doo 4 Tec Oil Questions - Please Educate Me

    I have a 2002 4 tec. What is a good, general substitute for the $10 a quart QPS oil?
    Also, does anyone know what weight oil that is? I know it's semi-synthetic, but can you use a full synthetic together with it?
    Please educate me.

  2. #2
    GTXX's Avatar
    Join Date
    Jan 2006
    NW, GA
    it's always been synthetic for that engine until BRP dropped full for the semi this year. 10W40 is the right weight

  3. #3
    So do I just buy a regular 10-40 synthetic?
    Or do I have to buy a 10-40 semi synthetic?

  4. #4
    800AMSOIL4U's Avatar
    Join Date
    Aug 2006
    Morgan Hill, CA
    If you have a supercharged engine and you want to use the BRP oil use the new semi-synthetic oil or find the older petroleum oil. If it is a non supercharged ski you can use the BRP full or semi-synthetic or petroleum oil. Here is the info on the AMSOIL Synthetic 10w-40 Marine Oil that is safe for either engine.
    Last edited by 800AMSOIL4U; 08-31-2009 at 05:44 PM. Reason: link

  5. #5
    homebrew's Avatar
    Join Date
    Aug 2008
    Hampton Va.
    alot of us use use the marine amsoil -- its done well with me

  6. #6
    Petron's Avatar
    Join Date
    Aug 2008
    Quote Originally Posted by homebrew View Post
    alot of us use use the marine amsoil -- its done well with me
    + 1. I also use it and cannot complain.

  7. #7

    Join Date
    Jan 2007
    Brigantine, NJ
    the 2002 4tec is NON supercharged.
    so synthetic is and always has been the normal requirement.
    amsoil wcf would be good option.

  8. #8
    Waterlogged2's Avatar
    Join Date
    Mar 2010
    Winnipeg MB Canada
    Has anyone used Lucas ATV semi synthetic 10-40 in their ski?

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