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Thread: T6 5w40 vs 0w40

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    Default T6 5w40 vs 0w40

    I been using PENNZOIL ULTRA 5W30 for 1 year,it's works great .
    I'm think next year try some t6 5w40 , and few days ago I went to CT and saw T6 also has 0w40 at same price
    And I google it about put it in mazdaspeeds . But did not find anything .
    Anyone in here using that the 0w40 ? Is it better at winter ?

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    Default Re: T6 5w40 vs 0w40

    I've been using the T6 0W40 for quite some time. I haven't noticed any issues with it.
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    Default Re: T6 5w40 vs 0w40

    tried both, didnt really feel any difference.
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    Default Re: T6 5w40 vs 0w40

    I wouldn't see any harm in running it during the winter to help with cold start wear.

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    Default Re: T6 5w40 vs 0w40

    Ran it last winter, no issues.
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