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Thread: 10w-30

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    10w-30

    Loving the feel of the engine with 10w-30 so far. Gonna try 10w-40 next



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    Senior Member silverstreak's Avatar
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    Just curious how the engine feels different from a heavier weight oil?

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    How does it affect gas mileage?

    You may have voided the warranty on the engine components by running a weight that is heavier than recommended.

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    Quote Originally Posted by silverstreak View Post
    Just curious how the engine feels different from a heavier weight oil?
    It is noticably smoother and quieter than with 0w-20 or 5w-30 ... It is my suspicion that the hard-working 3A92 engine was actually designed by the engineers for a heavier oil like 10w-30, then spec'd by the lawyers to 0W-20 for CAFE purposes in the USA.

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    Quote Originally Posted by M-88 View Post
    How does it affect gas mileage?

    You may have voided the warranty on the engine components by running a weight that is heavier than recommended.
    No problem with gas mileage so far - no noticable difference between 0w-20, 5w-30, and 10w-30.

    The manual states "If SAE 0W-20 is not available, the ILSAC certification oil of other viscosity grades can be temporarily used."

    My 10w-30 is ILSAC certified, and this grade is recommended for the same engine in Japan. Up to 20w-50 is recommended in the Netherlands!

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    Senior Member Charlie's Avatar
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    Braver than me. Highest I would feel safe trying is the 5w-30. With that said, I'm sticking with the 0w-20..and I live in sweltering heat FL!

    -Charlie-

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    I'm the oil guinea pig

    10W-30 isn't that much different than 5W-30 though. Less viscosity modifiers, so the 10w would be stouter than the 5w.

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    Cookiemonster is correct 0w20 is only to get optimum results on test, if you like in a warm climate 5w30,10w30,

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    Quote Originally Posted by Rahtid View Post
    Cookiemonster is correct 0w20 is only to get optimum results on test, if you like in a warm climate 5w30,10w30,
    Agreed ... I am also of the opinion that lighter oils like 0w20 are designed to increase the last percentage of fuel economy out of an engine, but thicker oils will prolong engine life.

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    Senior Member Charlie's Avatar
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    Ohh man, another thing for me to research and experiment on..

    lol, OK cookiemonster, because of you I will be looking into seeing if I will move up to a higher viscosity (do you live in a hot climate?). Thanks for the heads up!

    Are most people here sticking with the factory recommended 0w-20, or is most everyone going up to a higher viscosity??

    -Charlie-



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