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Thread: 5,000 Mile Oil Analysis

  1. #21
    Moderator inuvik's Avatar
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    Quote Originally Posted by Jibles View Post
    Any reason you've decided to run 5w30 instead of the suggested 0w20?
    i run 5w30also because if you compare viscosity ratings at 100C the 0w20 values are really low.


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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 automatic: 40.7 mpg (US) ... 17.3 km/L ... 5.8 L/100 km ... 48.9 mpg (Imp)


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    Quote Originally Posted by inuvik View Post
    i run 5w30also because if you compare viscosity ratings at 100C the 0w20 values are really low.
    ditto

  3. #23
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    I hear you, but to play devils advocate here... The mirage was designed to run on 0w20, so these viscocity ratings aren't low, they are in spec for the car. When you have a car that requires 5w30 do you instantly put in a 5w40? There just isn't any reason to unless you're under some extreme circumstances.

  4. #24
    Moderator inuvik's Avatar
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    Quote Originally Posted by Jibles View Post
    I hear you, but to play devils advocate here... The mirage was designed to run on 0w20, so these viscocity ratings aren't low, they are in spec for the car. When you have a car that requires 5w30 do you instantly put in a 5w40? There just isn't any reason to unless you're under some extreme circumstances.
    The only reason for 0w20 in the USA & Canada is for emissions purposes. The rest of the world specifies 5w30, 10w30, 10w40. When you look at the viscosity values of 0w20 they are lower across the range of temperatures compared to 5w30. Will the engine last for 100k using 0w20? Yes. Does 0w20 have the best viscosity values of any range of oil? Absolutely not. Does running 0w20 have any long term impacts? I don't think so but at least for me it doesn't seem to have made any difference in fuel economy and it dramatically reduced the "sewing machine" valve train noise.
    Last edited by inuvik; 09-24-2017 at 10:37 PM.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 automatic: 40.7 mpg (US) ... 17.3 km/L ... 5.8 L/100 km ... 48.9 mpg (Imp)


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  6. #25
    Administrator MetroMPG's Avatar
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    The rest of the world specifies 5w30, 10w30, 10w40.
    Japan and Europe too?

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage base ES 1.2 manual: 54.0 mpg (US) ... 23.0 km/L ... 4.4 L/100 km ... 64.9 mpg (Imp)


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    My mechanic suggested something thicker too. I have also tried once and it greatly lessened the engine noise, so after I'm done with my current batch of oil, i'll probably switch over.



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