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  1. #1
    AquaGuy's Avatar
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    Help me know this mystery oil.

    So I bought a GPR with a low compression engine. It is in the shop now getting a top end. I asked the previous owner what kind of oil he ran in it and he said he doesn't know. So I drained the tank and put some Yamalube 2w in it. The oil I drained has a dark color when in a gallon but if you take some on your finger it's actually like a light blue color. Has kind of an odor to it. I am wondering what this oil could be, I hope it's not regular outboard oil but with the stupidity of people nowadays you never know.


  2. #2
    SurfRider's Avatar
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    It's probably just some TC-W3 oil and is probably fine. Of course, it won't hurt to get rid of it and use something that is known to be good.

  3. #3
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by AquaGuy View Post
    So I bought a GPR with a low compression engine. It is in the shop now getting a top end. I asked the previous owner what kind of oil he ran in it and he said he doesn't know. So I drained the tank and put some Yamalube 2w in it. The oil I drained has a dark color when in a gallon but if you take some on your finger it's actually like a light blue color. Has kind of an odor to it. I am wondering what this oil could be, I hope it's not regular outboard oil but with the stupidity of people nowadays you never know.
    2w is kinda purple
    2m is kinda green

    bluish oil may be Quicksilver

  4. #4
    I think the 2S is blue... I think I remember reading that on citgo`s msds data sheet

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