5W-20 or 5W-30?
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This is a discussion on 5W-20 or 5W-30? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hello sorry for the question but i wanted to know if its okay to put in 5W-20 Royal Purple synthetic ...

  1. #1
    KpC
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    5W-20 or 5W-30?

    Hello sorry for the question but i wanted to know if its okay to put in 5W-20 Royal Purple synthetic oil in my 2006 WRX. I know that the car is asking for 5W-30 but my cousin gave me a huge case of 5W-20 and he doesn't need it anymore. I really do not wanna let it go to waste right now. If anyone could help me, I would really appreciate it. Also for a bit more info, I live in New Jersey and the average temperature these days is in the 80-90 degrees.

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    Moderator   Sasquatch's Avatar
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    I might try that in cold weather only.
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    Registered User ROHDEREX's Avatar
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    i would use 5w-20 in the winters for sure. i dont see how it would be bad to run that in the summers though either...

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    Moderator Donkey's Avatar
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    Because a 20 weight oil is way to thin.I run a 5w40 in the summer.
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  6. #5
    KpC
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    ya i know that its great for winter, but would it do harm to my car if I were to use it in the summer?

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    DUB
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    Just sell it and buy the proper viscosity.

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    ^...agree!

    20 weight is too thin...that's basically what your 30 weight oil sheers to when it's time to replace it.
    "Let the ingorance die with the ignorant"

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