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  1. #1
    Doo It Till It Hurts! holdnon72's Avatar
    Join Date
    Feb 2007
    South Jersey

    Anybody Running This Oil?

    I Think I'm gonna start running this Synthetic Oil in my naturally aspirated 155HP 4-Tec. Everytime I change the BRP XP-S 10W-40 oil it's badly beat-up and very dirty. So I think it's time to go with a good synthetic oil like this Mobil 1 10W-40...My Sea doo dealer told me to wait till I put about 20 Hours on my N/A 4-Tec before switching over to synthetic....I'm at 20 hrs now so I'm going fully synthetic. I'm not sure but couldn't this synthetic oil be used in the supercharged engines also becuase it has no friction modifiers? They make 3 different Weights of this oil you can check it out at

    Mobil 1 Racing 4T 10W-40 is designed for sport bikes. Most of these bikes have multi-cylinder/multi-valve engines and use a common sump, which means the engine oil lubricates the engine, transmission and wet clutch. So unlike Mobil 1 for cars, Mobil 1 Racing 4T 10W-40 has no friction modifiers, which could lead to clutch slippage.

  2. #2
    Doo It Till It Hurts! holdnon72's Avatar
    Join Date
    Feb 2007
    South Jersey

    Here's a photo of the oil in 10W-40

    Looks like it's about $8.99 a qt.
    Attached Images Attached Images  

  3. #3
    Texas Hoovermaneuver's Avatar
    Join Date
    Apr 2005
    Fort Worth, Texas
    I use Amsoil Synthetic in my RXP & RXT

  4. #4

    Join Date
    Sep 2006
    KC, MO
    The Amsoil oil you would use would be the SAE 10W-40 Formula 4-Stroke®
    Marine Synthetic Motor Oil (WCF)

    It is certified by the NMMA for use in boats and watercraft. It offers supperior protection, rust protection, and great performance. If you have any questions or are interested in wholesale prices through the Preferred Customer program please email or call me.

    (816) 645-9362

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