best oil for my car
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This is a discussion on best oil for my car within the Tutorials & DIY forums, part of the Tech & Modifying & General Repairs category; I have a 2009 wrx hatch. Going for my second oil change and want to know what is the preferred ...

  1. #1
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    Question best oil for my car

    I have a 2009 wrx hatch. Going for my second oil change and want to know what is the preferred oil to use considering i live in sudbury ontario and temps can dip into the -30 area. I really wanna protect my car through these cold winters. i do a lot of city driving. please take those factors into consideration when offering advice. Thanx

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    He simply abides. SD_GR's Avatar
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    A synthetic 5W-30 should flow adequately. Find one that meets the specifications in the manual with a decent price and readily available locally.
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    Registered User Ingo's Avatar
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    Avoid Mobil1, I read a lot about how it "shears". Some reports are that it turns watery in short time, comes out like coffee after only 1 or 2 k miles. Have not personally tried it, even though I've used it in my other cars and bikes quite a lot. Currently I'm running (don't laugh!) O'Reily's synth. . .
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    Registered User rosst192's Avatar
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    after reading many arguments i finally switched to rotella t6 5w-40 in my 2011 wrx. Seems to warm up a lot faster and its a heavier oil so it wont break down as quick as 5w-30.
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    Registered User CHRISesBUENO's Avatar
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    you'll never get a straight answer asking this, this is like going on yahoo and posting a question that says "should i get a ford or a chevy, an evo or an sti". best bet is to go with what you usually ran before just make sure its synth, you'll get different answers for every response and 100 different reasons why 1 is better

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    If you are really concerned, pick a good oil that meets the specs per Subaru, and then run it for a while and get a used oil analysis. Questions like this won't yield too much decent information in my opinion.

    I run rotella T6 5w-40 because it is cheap, and readily available in my area at multiple locations. However, it doesn't technically meet recommended Subaru guidelines IIRC, but my car doesn't drink it like it did with the Subaru brand of oil, so I've been sticking with it.
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    zax
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    Rotella T6 or German Castrol have consistently posted the most promising UOAs.
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    Registered User Ingo's Avatar
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    ^ are these synth?
    You can't have everything - where would you put it?

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    Registered User rosst192's Avatar
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    Rotella? Yeah full syn.
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  11. #10
    zax
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    Quote Originally Posted by Ingo View Post
    ^ are these synth?
    In the end, would it matter? A UOA is a UOA.

    If a dino oil could provide better sheer resistance and breakdown resistance compared to a synthetic oil operating in the same conditions, I would gladly choose the dino oil.
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