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Thread: Break-In oil

  1. #1

    Break-In oil

    What is the best break in oil to use?


  2. #2
    Will this oil work?


    -or-

  3. #3
    bnasty's Avatar
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    Quote Originally Posted by james1 View Post
    Will this oil work?


    -or-
    Actually, someone was one here last night discussing on another thread, saying that you DO NOT want to use a synthetic oil to break in a new top end. Keep looking around here...

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    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by james1 View Post
    What is the best break in oil to use?
    You don't need a great oil for break-in, just a decent oil.

    Non-synthetic 2-stroke oil is preferred. Break-in is essentially a controlled wear process for the piston rings and cylinder walls.

    As you work through the break-in process, you are heat cycling the pistons, and 'bedding in' the piston rings against the cylinder walls. At the same time, the cylinder walls are also being smoothed down by the piston rings.

    The effect is to improve the close fit of the piston ring sealing to the cylinders. This maximizes engine power, minimizes piston blow-by, and prepares the engine for a long running life.

    Look for a TC-W3 rated oil as the minimum. Pre-mix the first fuel tank with oil at 50:1 ratio, in addition to the oil in your oil injection tank. The oil tank does not need to be filled to the top, just half full is plenty.

    Do not use an API-TC rated oil - that is meant for Sea-Doo 2-strokes, which have different oil specs.

  5. #5
    Would the royal purple work then? I dont have a polaris store around here so i am trying to find oil to use for the break in

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    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by james1 View Post
    Would the royal purple work then?...
    I think the break-in oil you listed is for 4-stroke engines.

    The Royal Purple 2-Cycle TCW III is a 2-stroke oil, and will work in your Polaris.

    The Royal Purple oil may be a fine product, but their reliance on customer testimonials and vague testing methods doesn't entice me.

    For engine break-in, I suppose it will be OK.

    While you are working through the break-in process, you can order some Amsoil, and have it delivered. There are a few Amsoil dealers on GreenHulk, and you may also find a reseller in your area.

    Amsoil also has a membership program, where you pay a fee, and can buy the products at reduced prices.

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    750slt's Avatar
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    So you could recomened Amsoil over Royal Purple?

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    Quote Originally Posted by 750slt View Post
    So you could recommend Amsoil over Royal Purple?
    I am using Amsoil HP Injector myself (my Polaris are all fuel injected), and others on GH also seem happy with the Amsoil products.

    I also like it being delivered to my door. There are no convenient sources nearby for me that sell good quality 2-stroke oil at good prices, so Amsoil solves that problem.

    Do a search for Amsoil, and see which Amsoil product others are using in their Polaris 2-stroke engines, and how they like it.

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    750slt's Avatar
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    So what Amsoil oil would be the best use for the break in oil?

  10. #10
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    Quote Originally Posted by 750slt View Post
    So what Amsoil oil would be the best use for the break in oil?
    I am not sure which would be the best Amsoil choice for engine break-in. They are all synthetic oils, which is great for long term use, but not so good for break-in

    Do you have any 2-stroke outboard motor oil suppliers nearby? See what they have available.
    TC-W3 is what you need to see on the label.

    Here is the Amsoil 2-stroke oil application chart.


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