Why is the oil change interval so different GEN 3vs4

Discussion in 'Gen 4 Prius Main Forum' started by shadow4478, Dec 5, 2019.

  1. shadow4478

    shadow4478 Member

    Joined:
    Aug 14, 2017
    59
    39
    0
    Location:
    Barrie
    Vehicle:
    2017 Prius
    Model:
    N/A
    Why is the oil change interval so different between the two models is the engine that much different ? 5000k vs 10000k I read a lot of the 5000k have bumped up to 7500k unofficially it seems :)
     
    Mendel Leisk likes this.
  2. Rmay635703

    Rmay635703 Senior Member

    Joined:
    Oct 16, 2016
    1,569
    1,015
    0
    Location:
    Somewhere in Wisconsin
    Vehicle:
    2013 Chevy Volt
    Model:
    N/A
    Oil consumption
     
    vvillovv likes this.
  3. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    6,063
    6,654
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    Depends on the country - not sure what country you're in, as your profile doesn't say.

    I can understand it with a high-powered, highly stressed engine. But hybrid engines almost never run at full power, and only about 70% of the time.

    My cynical guess is that they grab a coin, flip it and go with it. Here, all TOYOTAs were 10,000km/6 months. But, they've been slowly moving them, at random, to 15,000km/12 months. There have been no effective changes - just they're re-flipped the coin.

    Actually - I suspect it's as a response to complaints, and the opposition have been 15,000/12 months for quite a few years.

    But - dealers like the $$$ from services.
     
    Tyfly and Mendel Leisk like this.
  4. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    40,382
    28,927
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    OP's in Barrie, Ontario, Canada I think. Here third gen was 8000 kms (~5000 miles) or 6 months, and fourth gen was 16,000 kms (~10,000 miles) or 12 months. Yeah it IS a big difference, 100% increase. And the engine's essentially the same. Showmanship? Getting in line with the Yanks?

    Bottom line still: it's your car, you can be more conservative if you like. I like 8000 kms or 6 months. With us it's always 6 months that governs. By a lot. So much I don't care to divulge.
     
    vvillovv and alanclarkeau like this.
  5. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    6,063
    6,654
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    yep, thought yours was 16,000 kms /12 months I haven't had a car with 6 monthly services for at least a decade, maybe nearly 2 - and suddenly realise my PRIUS they want me every 6 months. I wasn't happy. Still grizzle under my breath when I take it in and sit waiting.

    I guess I could understand if I lived in the outback, dusty unsealed roads, temperatures in the 40°s for months on end. But other cars had an supplementary in-between service for those conditions.
     
  6. booke02

    booke02 Active Member

    Joined:
    Mar 25, 2016
    388
    395
    0
    Location:
    Israel
    Vehicle:
    2016 Prius
    Model:
    N/A
    Pretty well describes the climate here - hot and very dusty (sand storms).

    Our service intervals for both Gen 3 and Gen 4 are every 15,000km (a bit under 10,000 miles), or once per year
     
    kithmo and alanclarkeau like this.
  7. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,124
    6,462
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    shadow4478
    In the US, Gen 2 was 6 months/5000 miles (8000 km) on a thicker, non synthetic oil. Gen 3 came out on a thinner, synthetic oil and within months of the introduction, the OCI was bumped to 12 months/10000 miles. (16,000 km) I am not aware of a change in the US between Gen 3 and Gen 4.

    In Canada, you have two competing issues:
    Vast stretches of the far north are a pretty hostile environment for cars.
    2/3 of Canadians (and their cars?) live within 100 km of the US border. So 5% of Canada has 2/3 of the Canadians.

    (By road, Barrie is 215 km from the US, but quite a lot of that is driving around Lake Ontario, Barrie is perhaps 120 km from the border in the middle of Lake Ontario in a straight line. Under 100 km to the Canadian shore.)

    I last visited Barrie in 1987, it has probably changed.
     
    alanclarkeau likes this.
  8. vvillovv

    vvillovv Senior Member

    Joined:
    Mar 19, 2013
    1,041
    399
    0
    Location:
    NY
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    Yep
     
  9. alanclarkeau

    alanclarkeau Senior Member

    Joined:
    Feb 24, 2016
    6,063
    6,654
    0
    Location:
    near Brisbane, Australia
    Vehicle:
    2016 Prius
    Model:
    N/A
    You mean that the Gen 3 used more oil than the Gen 4? I've only done 51,000kms and mine hasn't used any oil. Not that any of my new cars in the last 25 years have.

    Not like in the '70s and early '80s (or Dad's '40s and '50s cars).

    It can actually be a problem with the odd car today which, for some reason, uses oil. People have got out of the habit of checking their oil because it will almost always go 10,000km (or 15,000 for longer Ford or Kia frequencies). We used to always keep a spare bottle of oil at home - in some cases in the boot. And water. And spare belt, plugs, points etc.

    His '49 Austin said this - and meant it!!!
    upload_2019-12-6_23-16-50.png
     
    ETP, kithmo and vvillovv like this.
  10. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    89,438
    40,013
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i thought in the u.s. the oci was 5k when gen3 first came out, and was later changed to 10k.
     
    Mendel Leisk likes this.
  11. FuelMiser

    FuelMiser Senior Member

    Joined:
    Jun 29, 2008
    862
    586
    0
    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    Does your oil fill cap say "0W-20" or "5W-20"?
     
  12. kithmo

    kithmo Couch Potato

    Joined:
    Apr 25, 2010
    2,351
    2,676
    47
    Location:
    South Yorkshire, UK
    Vehicle:
    2016 Prius
    Very similar here 10K miles/12 months Gen 3 & 4
     
    alanclarkeau likes this.
  13. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    40,382
    28,927
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I don't think Toyota makes any sort of statement regarding conventional vs synthetic oil. There are synthetic 5W20 oils available. I guess what I'm saying: they changed the oil weight spec, but that's all. My take: they went to thinner oil to squeeze a bit more mpg, and the longer oil change interval was more-n-likely at the behest of the sales department??

    Yeah virtually all Canadians are clinging (like barnacles...) to the 49th parallel. And my case, winters in Hollywood North on the west coast, vs North Dakota: no contest. And then there's Alaska...
     
    alanclarkeau likes this.
  14. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    41,274
    12,802
    41
    Location:
    Canada
    Vehicle:
    2018 Prius Prime
    Model:
    Technology
    Well at one point, the US Gen 3 was at the 16,000km interval while the Canadian spec was still 8,000km until the end of the generation.

    The only thing I can think of is the "severe specification" that Toyota Canada prefers to keep for the Gen 3 or the fact that it's using semi-synthetic and maybe the US is using full synthetic oil for the Gen 3.

    The 2010 model could use 5W-20 or 0W20. 2011 onwards, all Toyotas in Canada used 0W-20.

    The Gen 4 uses 0W-15. 0W20

    Well, Barrie is almost the same latitude as Portland and Toronto is just south of Eugene, OR.
     
    #14 Tideland Prius, Dec 6, 2019
    Last edited: Dec 6, 2019
    alanclarkeau likes this.
  15. shadow4478

    shadow4478 Member

    Joined:
    Aug 14, 2017
    59
    39
    0
    Location:
    Barrie
    Vehicle:
    2017 Prius
    Model:
    N/A
    I’m going to make my own and change oil every 10000km about 6250miles.
     
    Mendel Leisk likes this.
  16. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    40,382
    28,927
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    You could pour 5W30 in there, and the engine would be happy as a clam I think. I guess what I'm saying: Toyota "says" to use something, but it's not a go-no-go situation.

    Is the stuff even available? That's likely a non-starter for most owners. It is essentially the same engine. Also, see above.
     
    douglasjre and alanclarkeau like this.
  17. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    41,274
    12,802
    41
    Location:
    Canada
    Vehicle:
    2018 Prius Prime
    Model:
    Technology
    Oops. My mistake. It's 0W-20 for the Gen 4 and Prime. No idea where I got the idea it was 0W-15. I'll edit the post.

    True. The service department sometimes put 5W20 and sometimes 0W20. The 5W20 is semi-synthetic and is cheaper.
     
    alanclarkeau and Mendel Leisk like this.
  18. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    40,382
    28,927
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    0W16 is mentioned as the spec'd oil, somewhere in Owner's Manual, and/or Owner's Manual Supplement (CDN) or Warranty and Maintenance Booklet (US). And it's somewhat contradictory, didn't really get an editorial review.

    Bottom line, they do a fair amount of flip-flopping. It'd be refreshing to hear straight from the engineers.

    Again, you can get synthetic 5W20, 5W30. I'm not sure it's the synth that's driving the interval. Toyota never mentions the word "synth". Well they do, but regarding upholstery material IIRC.
     
    Tideland Prius and alanclarkeau like this.
  19. Brandon Kennedy

    Brandon Kennedy Junior Member

    Joined:
    Feb 22, 2019
    32
    13
    0
    Location:
    Morristown Tn
    Vehicle:
    2016 Prius
    Model:
    Four Touring
    Would it hurt to use 5w-30 instead of 0-w20? Wouldn’t it coat the parts and therefore better protect the engine? Or is the lighter weight (like someone said) used for the higher mpg, and because the car starts and stops a lot so need fast flowing oil?
    I’ve been putting 0w-20 in mine and even after starting it over night you hear the engine for a half second sound chattery as hell, then quiets down almost basically immediately... 2016 gen 4.

    I also use Mobil one synthetic extended performance and change it about every 7500-8000 miles and it’s a 15,000 guaranteed oil. Still looks pretty good when I change the oil but I do it more for my own safety than anything, I’m sure no doubt it could go the 15k as I’ve done it on my other cars before in the past
     
  20. Chris Wolfgram

    Joined:
    Oct 20, 2019
    252
    108
    0
    Location:
    Sacramento CA
    Vehicle:
    2019 Prius
    Model:
    LE
    Well yeah, my 2019 says every 10K... But I'm thinking I'll do mine at 7500 to 8k.... Which for me will be about every 6 weeks.
     
    Brandon Kennedy and Mendel Leisk like this.
Loading...