Engine oil grade and replacement frequency

Discussion in 'Gen 4 Prius Main Forum' started by rahmani, Apr 29, 2021.

  1. rahmani

    rahmani New Member

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    What would be the best engine oil grade for Prius 2016?
    What would be the ideal frequency to change engine oil?
     
  2. jdenenberg

    jdenenberg EE Professor

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    The owner's manual says:
    • 0w-20 (but you live in a hot climate so 5w-30 may be more appropriate)
    • 10k miles (16k km) or one year with full synthetic oil (if using non-synthetic oil I would say 5k miles (8k km) or 6 months)
    JeffD
     
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  3. rahmani

    rahmani New Member

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    Thanks
     
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Owners Manual might say 0W16 (4th gen rev), but that’s maybe just Toyota trying to eke out a bit more mpg. Still, definitely consider heavier oil in hot climate.
     
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  5. rahmani

    rahmani New Member

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  6. jdenenberg

    jdenenberg EE Professor

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    Mendel,

    There has been a drive to use a new grade of oil, "GR-6B" in cars, but that is for engines that were designed for that oil. A 2016 Prius predates the spec, but Toyota says it is OK. I am sticking to 0w-20 in my Gen4.

    "0W16 oils were going to be part of the ILSAC GF-6 rollout as GF-6B oil. What is significant about GF-6B oils is that the specification will not be backward compatible because of the new viscosity grades."

    JeffD
     
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  7. Hamza Masarwa

    Hamza Masarwa New Member

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    Hello
    I need a soft copy of owner's manual plz.

    Posted via the PriusChat mobile app.
     
  8. Mendel Leisk

    Mendel Leisk Senior Member

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    You can download PDF at Toyota Tech Info. And also some Toyota Owners site?
     
  9. alanclarkeau

    alanclarkeau Senior Member

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    It's in the Owner's Manual. Oil Grade is on the Oil Filler cap.
     
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  10. alanclarkeau

    alanclarkeau Senior Member

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