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0W-16 Oil for Gen 4 Prius (and other cars)

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by au_prius, Jan 4, 2017.

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  1. au_prius

    au_prius Australian Prius Driver

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    I was wondering whether anyone has experience with using 0W-16 grade oil for their Prius (or other cars)?

    From reading Japanese websites and the Japanese market Prius owners manual, 0W-16 appears to be factory fill for Japanese domestic market Priuses. Not sure if this the case for other countries (yet). It seems adapting engines to accept ultra low viscosity oils like 0W-16 is another further step towards improving fuel economy.

    Here in Australia, 0W-16 seems to be tricky to get; I would be interested to know how easy it is to get in other countries and how expensive it is (I'm guessing very expensive!).

    Just for your reference, here are a few 0W-16 products I've found:

    Ravenol (Germany)
    RAVENOL Extra Fuel Economy EFE SAE 0W-16 - Ravenol

    Penrite (Australia)
    ENVIRO+ HYBRID 0W-16 (Full Synthetic)

    ENEOS (Japan / US)
    ENEOS Launches 0W-16 Motor Oil With Next Generation Technology | ENEOS
     
    #1 au_prius, Jan 4, 2017
    Last edited: Jan 4, 2017
  2. au_prius

    au_prius Australian Prius Driver

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    For your interest, I've attached a picture from the Prius (ZVW50 series) Japanese domestic market owner's manual which lists recommended oils.

    [translation below]

    "Engine Oil Recommended Viscosity

    Use the chart below to determine the optimum engine oil viscosity according to the temperature conditions.

    * Your car is filled with 0W-16 oil at the factory when new, and it is the best oil for optimum fuel economy"
     

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    #2 au_prius, Jan 4, 2017
  3. ETP

    ETP 2021 Prime(Limit),24 Venza Limit,B52-D,G,F,H

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    Interesting, always wondered why the Prius' get great mileage off the show room floor.
     
    #3 ETP, Jan 6, 2017
  4. RCO

    RCO Senior Member

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    As a non-engineer, I assume the lower viscosity oil is acceptable because of the Prius's low torque ICE.
     
    #4 RCO, Jan 7, 2017
  5. ETP

    ETP 2021 Prime(Limit),24 Venza Limit,B52-D,G,F,H

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    Seems to do well up to 125K. Not sure if in very hot climates if you shouldn't do 0W30 or 0W40. Appears in cold weather that this thin oil may be a great benefit.
     
    #5 ETP, Jan 8, 2017
    Rickyedger likes this.
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