Oil

Discussion in 'Gen 4 Prius Technical Discussion' started by modeladay, Dec 30, 2019.

  1. modeladay

    modeladay Junior Member

    Joined:
    Sep 26, 2019
    13
    4
    0
    Location:
    Lincolnton,ga
    Vehicle:
    2016 Prius
    Model:
    ----USA----
    What are your thoughts on using 0-30 oil as opposed to the recommend 0-20? I live in the south where temperatures most of the summer run in the 90s and above.
     
  2. Rmay635703

    Rmay635703 Senior Member

    Joined:
    Oct 16, 2016
    2,011
    1,291
    0
    Location:
    Somewhere in Wisconsin
    Vehicle:
    2013 Chevy Volt
    Model:
    N/A
    Go ahead, might loose a couple mpg but others have had good results with oil burners
     
  3. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    46,021
    32,861
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Or 5W30? Maybe easier to find, was the 2nd oil spec.
     
  4. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    6,860
    7,409
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    Australian manuals show this:
    upload_2019-12-31_10-59-6.png

    10W/30 is what my TOYOTA dealer's invoice shows they use.
     
  5. modeladay

    modeladay Junior Member

    Joined:
    Sep 26, 2019
    13
    4
    0
    Location:
    Lincolnton,ga
    Vehicle:
    2016 Prius
    Model:
    ----USA----
    I can get 0-30 here at Walmart so its not to find, I was wondering if there was an advantage to using it considering the over all hot weather? I wouldn’t mind giving up a little mph if the result would be better protection for the engine.
     
  6. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    6,860
    7,409
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    This is TOYOTA's recommendation in the manual with your car - it's your choice once a car is out of warranty - you could ring TOYOTA and ask their opinion.

    upload_2019-12-31_22-58-7.png
     
  7. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    46,021
    32,861
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Or before? Toyota recommends a viscosity, but it's not a strong caution. Doubly so considering your Australian Manual with it's gamut of grades, even though they still recommend 0W20.

    The last line you quoted, talks about moving up to higher numbers under certain conditions.

    For all my talk, I'm Mr OW20 so far, lol.
     
    alanclarkeau likes this.
  8. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    7,253
    5,969
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Won't hurt.
    Won't help.

    The oil temp in your engine is the same in summer months when it's over 90 in Jawga as it is when it's under 32 during the winter months.......probably somewhere around 190-degrees.
    Engine temps are critical in judging whether or not your coolant temperatures are within proper ranges which is why the temperature gauge in a Prius is as big as it isn't. ;)
    If you will notice the arrow in the picture above, it extends beyond 80-degrees.
    If 90....or 100....or 110 represented a problem with the oil I'm thinking that there'd be a vertical stop with a message saying:
    "Hold up there! t's getting HOT!! Better club up to a 0w30 or 40!"

    There isn't...

    Despite claims that global warming is going to kill off the human race - I do not think it's ever going to get over 190-degrees in the largest state east of the Mississippi....or in Death Valley....or the Gobi desert, or anywhere else you think that you need to run thicker oil.
    If you have a 3-4 year old car and you don't check your oil level as often as the manual suggests, you might experience greater oil use after 100,000 miles - but for properly maintained cars in North America, I'd say that there's not going to be much of a difference by going up or down one grade.

    As always.....

    YMMV
     
    #8 ETC(SS), Dec 31, 2019
    Last edited: Dec 31, 2019