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Looking for another opinion.

Discussion in 'Gen 3 Prius Main Forum' started by nudriver, Feb 7, 2021.

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  1. nudriver

    nudriver Member

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    I have messed up piston rings and my car burns oil. I don't know what the oil type is supposed to be, but my mechanic is telling me to buy 5W40. I believe it's because he thinks a thicker oil is necessary to preserve engine life. Is this safe?
     
    #1 nudriver, Feb 7, 2021
  2. davecook89t

    davecook89t Senior Member

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    The thicker oil is actually recommended to slow the burn rate. A thinner oil will allow you to get better gas mileage because there is less friction on the pistons as they move up and down, and it is better for cold weather starts because it can spread itself better over your metal parts to preserve engine life. In your climate, I think you will be fine with a thicker oil.
     
    #2 davecook89t, Feb 7, 2021
    nudriver likes this.
  3. sam spade 2

    sam spade 2 Senior Member

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    Yes. Fine.
    Didn't you ask this exact same question in another sub-forum on here already ??
     
    #3 sam spade 2, Feb 7, 2021
  4. ASRDogman

    ASRDogman Senior Member

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    This question has been given several answers in the other section that you posted...
    You should read them.

     
    #4 ASRDogman, Feb 7, 2021
    kenoarto likes this.
  5. Tideland Prius

    Tideland Prius Moderator of the North
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    #5 Tideland Prius, Feb 7, 2021
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