Page 2 of 2 FirstFirst 12
Results 16 to 25 of 25

Thread: Oil confusion-16-19 2.5t

  1. #16
    Registered Member JPL's Avatar

    2018 CX-9 Signature

    Join Date
    Jun 2016
    Location
    MA
    Posts
    666
    What gets me is these ignorant dealers actually saying you can only use conventional oil in the 2.5T. You can use synthetic in ALL cars. Nevermind that a turbo engine benefits more.

    People go to a dealer for service for added expertise, particularly with your newer car. If you're dealing with this sort of ignorance, might as well just go to Joe's quicky lube.

  2. #17
    Registered Member

    Mazda CX-9 Grand Touring 2016

    Join Date
    Sep 2016
    Location
    Washington, the state
    Posts
    363
    "Mazda Genuine Oil is used in your Mazda vehicle. Mazda Genuine 5W-30 Oil is required to achieve optimum fuel economy."

    I'm so glad that Mazda requires genuine oil. I'd hate to use not-genuine oil and be found out. Is synthetic oil also genuine oil? Or do I need to be sure to use genuine synthetic oil to meet Mazda's requirements? It's so confusing.....

    This image shows Mazda Original Oil. Is this also genuine oil? I'd think Mazda original oil would be really old, but it must be OK if they're still using it.

    Last edited by PTguy; 10-09-2018 at 06:13 PM.

  3. #18
    Registered Member JPL's Avatar

    2018 CX-9 Signature

    Join Date
    Jun 2016
    Location
    MA
    Posts
    666
    My owners manual suggests Castrol oils as they currently have a deal with them. So I wonder if Mazda branded oil is still being made.

  4. #19
    Registered Member CX-5um's Avatar

    13' CX-5 and 16' Mazda6 both Touring w/Tech/Bose

    Join Date
    Jul 2012
    Location
    Glendale, AZ
    Posts
    2,770
    Quote Originally Posted by JPL View Post
    What exactly is the question? As we've discussed, you can use both synthetic and conventional oil in this engine.
    RTCX9 got an answer from MNAO

    MNAO recommends all Skyactiv engines to use Full Synthetic Motor Oil but not required. The recommended oil MNAO does suggests is SAE 5W-30 engine oil. Mazda Genuine Oil is used in your Mazda vehicle. Mazda Genuine 5W-30 Oil is required to achieve optimum fuel economy.

    Appears you can use either. Synthetic is recommended but not required. I can easily get 7-9k miles on synthetic oil on non-turbo skyativ engine. Regular oil in a turbo car would last no more than 5k imho. Interesting to see the blackstone lab results of regular oil after 5k miles.
    Last edited by CX-5um; 10-10-2018 at 03:18 PM.

  5. #20
    Registered Member

    2019 CX-9 Grand Touring

    Join Date
    Oct 2018
    Location
    Phoenix, AZ
    Posts
    51
    I do my own oil changes and will be using Mobil 1 oil and likely filters. I generally use better oil than what is recommended and go with the standard oil change interval which on the CX-9 is 7500 miles. For me this typically equates to 2x per year, spring and fall.

  6. #21
    Registered Member

    Mazda CX-9 Grand Touring 2016

    Join Date
    Sep 2016
    Location
    Washington, the state
    Posts
    363
    In a Phoenix summer, I'd use an xW-40 gasoline engine oil. I'd want the extra viscosity in that blistering heat. Mobil 1 0W-40 or Castrol Edge or Kendall GT-1 Euro/Phillips66 Shield Euro-Tech 5W-40 would be my choice. I know, not in the book. A diesel engine 5W-40 would have the wrong additive package for our engines--it's would work but not be the best in the long run.

    CX-5um, the life of oil in a turbocharged engine all depends on how the turbocharger heat is handled. To know that oil life, as you mention, a lab analysis is needed. The level of oxidation of the oil, increased by excessive heat, would be one of the signs of how the oil is surviving.

  7. #22
    Registered Member

    2019 CX-9 Grand Touring

    Join Date
    Oct 2018
    Location
    Phoenix, AZ
    Posts
    51
    Quote Originally Posted by PTguy View Post
    In a Phoenix summer, I'd use an xW-40 gasoline engine oil. I'd want the extra viscosity in that blistering heat. Mobil 1 0W-40 or Castrol Edge or Kendall GT-1 Euro/Phillips66 Shield Euro-Tech 5W-40 would be my choice. I know, not in the book. A diesel engine 5W-40 would have the wrong additive package for our engines--it's would work but not be the best in the long run.

    CX-5um, the life of oil in a turbocharged engine all depends on how the turbocharger heat is handled. To know that oil life, as you mention, a lab analysis is needed. The level of oxidation of the oil, increased by excessive heat, would be one of the signs of how the oil is surviving.
    The hot Phoenix summer is one of the reasons I choose to use fully synthetic oil (turbo is another). It's the best I'm aware of that meets the manufacturer's specs. I won't go outside their specifications especially during the warranty period and probably not ever. I know that I don't know better than the people who designed the engine.
    Last edited by 19CX9; 10-12-2018 at 11:36 AM.

  8. #23
    Registrierte Benutzer Chris_Top_Her's Avatar
    Donated: $45
    CX Moderator

    '15 CX-5 Miata GT AWD w/Tech 2.5L

    Join Date
    Sep 2012
    Location
    San Antonio TX
    Posts
    5,860
    I would not use dino oil in a turbo car period. Unless it is an old engine that's been on dino its whole life, dino is more likely to come in a turbo.

  9. #24
    Registered Member colnago1331's Avatar


    Join Date
    Jul 2002
    Location
    Columbus, Ohio, USA
    Posts
    138
    I use full synthetic (Castrol Edge 5W-30) and a dealer-purchased filter/crush washer on my '17 CX-9, and I'll do a change every 5,000 miles, which for me is between 2 and 3 times/year. A 5-quart jug of Castrol Edge is only $25 on Amazon, and the filter/crush washer is maybe another $8. It seems silly to not spend $99/year to make sure my CX-9 lasts as long as possible.
    CURRENT MAZDA:
    2017 Mazda CX-9 GT AWD 6AT - Crystal Blue Mica *20" OEM Mazda wheels or 19" ASA GT13 wheels *255/50R20 Falken Ziex CT50 tires or 255/55R19 Bridgestone Blizzak DM-V2 tires * WeatherTech FloorLiner Mats * Draw-Tite 2" Hitch Receiver* Thule 460 Podium Feet w/ 50" Crossbars* Thule Force L Cargo Box

    ALSO IN THE DRIVEWAY:

    1986 Audi Coupe GT 5MT (the Winter Beater) | 2001 Saab 9-3 SE Convertible 5MT (the Summer Beater) | 2015 Acura MDX Advance (the Mrs.' Car)

    GONE BUT NOT FORGOTTEN MAZDAS:

    2015 Mazda CX-9 Touring AWD 6AT | 2014 Mazda6 i Touring 6MT | 2010 Mazda3 S 6MT | 2007 Mazda RX-8 GT 6MT | 2008 Mazda Miata Touring PRHT 6MT | 2006 Mazda Miata Sport 5MT | 2003 Mazda MPV ES 5AT | 2001 Mazda Protege5 5MT | 1999 Mazda Miata 5MT

  10. #25
    Registered Member

    2019 CX-9 GT Machine Grey

    Join Date
    Jan 2007
    Location
    Massachusetts
    Posts
    68
    Quote Originally Posted by colnago1331 View Post
    I use full synthetic (Castrol Edge 5W-30) and a dealer-purchased filter/crush washer on my '17 CX-9, and I'll do a change every 5,000 miles, which for me is between 2 and 3 times/year. A 5-quart jug of Castrol Edge is only $25 on Amazon, and the filter/crush washer is maybe another $8. It seems silly to not spend $99/year to make sure my CX-9 lasts as long as possible.
    Ill be following this schedule and oil as well! Hey colnago saw u own a Gt Coupe. Used to own an 87 2.3l. Loved that car!!

Page 2 of 2 FirstFirst 12

Similar Threads

  1. HID Confusion?
    By Lateralus_923 in forum Mazda6 Infotainment
    Replies: 14
    Last Post: 02-15-2010, 08:35 PM
  2. Confusion???
    By MazdaSpeeder00 in forum Global
    Replies: 21
    Last Post: 02-07-2004, 11:55 PM
  3. bov confusion
    By NjMpSpeed in forum Mazdaspeed Protege
    Replies: 9
    Last Post: 12-03-2003, 12:27 PM
  4. Confusion!
    By Ryan in forum Off Topic
    Replies: 49
    Last Post: 05-02-2003, 08:15 PM
  5. Oil confusion
    By ZiO in forum Protege5
    Replies: 3
    Last Post: 10-21-2002, 02:34 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •