User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 33

Thread: Evo x rear diff fluid change diy???

  1. #1
    Junior Member
    Join Date
    Mar 2016
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Evo x rear diff fluid change diy???

    Alright guys. I have searched for about 4 months straight now, so don't give me the whole "Google it" spiel. All that I've found are threads like this, but everyone is arguing whether or not you need to bleed the diff. Is there a diy out there explaining how to drain and fill the the rear diff fluids? Or at least which fluid goes goes in which fill hole? Not for the ayc system, just for the clutch packs.

    Sent from my LG-H810 using Tapatalk

  2. #2
    Senior Member
    Join Date
    Aug 2015
    Posts
    414
    Mentioned
    19 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dudemanrod View Post
    Alright guys. I have searched for about 4 months straight now, so don't give me the whole "Google it" spiel. All that I've found are threads like this, but everyone is arguing whether or not you need to bleed the diff. Is there a diy out there explaining how to drain and fill the the rear diff fluids? Or at least which fluid goes goes in which fill hole? Not for the ayc system, just for the clutch packs.

    Sent from my LG-H810 using Tapatalk
    bleeding is referring to the AYC hydraulic portion of the diff which is not a part of scheduled maintenance. Scheduled maintenance is simple drain and fill of the ATF fluid for the wet clutches and the differential fluid. ATF fill and drain are labeled on the diff itself as well from what I remember. I'll have to dig up the section of the maintenance manual detailing bolt locations. I use Motul 90PA for diff fluid instead of the Diaqueen.

    found it
    Last edited by zabes; 03-28-2016 at 02:54 PM.

  3. #3
    Senior Member
    Join Date
    Aug 2015
    Location
    Knoxville
    Posts
    112
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    ^ beat me to it.

    I admit there is a lot of conflicting info in lots of threads, so for a first timer it can be a bit confusing. No you do not need to bleed anything with a rear diff fluid change. It's just drain and fill. It is All spelled out in the service manual. Use diaqueen lsd gear oil for the differential mechanism part, and diamond ATF SP III for the torque transfer mechanism part. On the Google search "evo X rear diff fluid change", the image of the service manual page comes up. I'd post it but I'm short on time.

  4. #4
    Junior Member
    Join Date
    Mar 2016
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by zabes View Post
    Quote Originally Posted by dudemanrod View Post
    Alright guys. I have searched for about 4 months straight now, so don't give me the whole "Google it" spiel. All that I've found are threads like this, but everyone is arguing whether or not you need to bleed the diff. Is there a diy out there explaining how to drain and fill the the rear diff fluids? Or at least which fluid goes goes in which fill hole? Not for the ayc system, just for the clutch packs.

    Sent from my LG-H810 using Tapatalk
    bleeding is referring to the AYC hydraulic portion of the diff which is not a part of scheduled maintenance. Scheduled maintenance is simple drain and fill of the ATF fluid for the wet clutches and the differential fluid. ATF fill and drain are labeled on the diff itself as well from what I remember. I'll have to dig up the section of the maintenance manual detailing bolt locations. I use Motul 90PA for diff fluid instead of the Diaqueen.

    found it
    Awesome, thank you so much! I'm assuming you have to put it on 4 stands? Or can you just jack up the rear?

    Sent from my LG-H810 using Tapatalk

  5. #5
    Junior Member
    Join Date
    Mar 2016
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by zabes View Post
    Quote Originally Posted by dudemanrod View Post
    Alright guys. I have searched for about 4 months straight now, so don't give me the whole "Google it" spiel. All that I've found are threads like this, but everyone is arguing whether or not you need to bleed the diff. Is there a diy out there explaining how to drain and fill the the rear diff fluids? Or at least which fluid goes goes in which fill hole? Not for the ayc system, just for the clutch packs.

    Sent from my LG-H810 using Tapatalk
    bleeding is referring to the AYC hydraulic portion of the diff which is not a part of scheduled maintenance. Scheduled maintenance is simple drain and fill of the ATF fluid for the wet clutches and the differential fluid. ATF fill and drain are labeled on the diff itself as well from what I remember. I'll have to dig up the section of the maintenance manual detailing bolt locations. I use Motul 90PA for diff fluid instead of the Diaqueen.

    found it
    Also, are you saying you use motul 90 in both the torque transfer mech AND the differential mechanism?

    Sent from my LG-H810 using Tapatalk

  6. #6
    Senior Member
    Join Date
    Aug 2015
    Posts
    414
    Mentioned
    19 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dudemanrod View Post
    Awesome, thank you so much! I'm assuming you have to put it on 4 stands? Or can you just jack up the rear?

    Also, are you saying you use motul 90 in both the torque transfer mech AND the differential mechanism?

    Sent from my LG-H810 using Tapatalk
    I used Motul 90PA for the diff itself. Motul ATF for the torque transfer section.

    You can get away with just jacking up the rear. If your small enough, dont even need to jack it up. Also, get a long run of 3/8" or 1/2" rubber tubing (like 10 feet. cant remember which size i used) and you can gravity fill the diff without needing to go the route of a fluid pump. Pumping 90w fluid sucks.

  7. #7
    Senior Member
    Join Date
    Aug 2015
    Posts
    114
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)

  8. #8
    Junior Member
    Join Date
    Mar 2016
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by zabes View Post
    Quote Originally Posted by dudemanrod View Post
    Awesome, thank you so much! I'm assuming you have to put it on 4 stands? Or can you just jack up the rear?

    Also, are you saying you use motul 90 in both the torque transfer mech AND the differential mechanism?

    Sent from my LG-H810 using Tapatalk
    I used Motul 90PA for the diff itself. Motul ATF for the torque transfer section.

    You can get away with just jacking up the rear. If your small enough, dont even need to jack it up. Also, get a long run of 3/8" or 1/2" rubber tubing (like 10 feet. cant remember which size i used) and you can gravity fill the diff without needing to go the route of a fluid pump. Pumping 90w fluid sucks.
    Awesome. You've been a huge help!! Thank you!

    Sent from my LG-H810 using Tapatalk

  9. #9
    Junior Member
    Join Date
    Mar 2016
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ZLAYER View Post
    ^ beat me to it.

    I admit there is a lot of conflicting info in lots of threads, so for a first timer it can be a bit confusing. No you do not need to bleed anything with a rear diff fluid change. It's just drain and fill. It is All spelled out in the service manual. Use diaqueen lsd gear oil for the differential mechanism part, and diamond ATF SP III for the torque transfer mechanism part. On the Google search "evo X rear diff fluid change", the image of the service manual page comes up. I'd post it but I'm short on time.
    Thank you!!

    Sent from my LG-H810 using Tapatalk

  10. #10
    Global Mod of Stuffs Locust's Avatar
    Join Date
    Aug 2015
    Location
    Seattle, WA
    Posts
    2,183
    Mentioned
    59 Post(s)
    Tagged
    0 Thread(s)
    Ideally when you're draining that you want it flat. You'll need some sort of squeeze bottle to fill it.

    2012 EvoX MR - 11.289 @ 123.24mph
    2015 Scion FR-S - D-Street in SCCA Solo II
    Info/Pics: Instagram / Build Thread
    Sponsors: DSGPerformance
    Founder: Evil Apex Racing

  11. #11
    Senior Member flawlessninja's Avatar
    Join Date
    Aug 2015
    Location
    Arizona
    Posts
    1,457
    Mentioned
    29 Post(s)
    Tagged
    0 Thread(s)
    Does anyone change the ATF fluid in the "torque transfer" part of the rear diff when they change their gear oil? (typically every 15k or 30k miles depending on usage)

    I just changed the gear oil and left the ATF fluid alone. Since I typically race the car in OFF-OFF mode I didn't think the AYC pump or clutches had to work very hard, so the ATF fluid should still be fine, right?

    I just checked the fluid level in the reservoir after letting the car sit overnight and it's just below the max line.
    @stephenemersondickens
    2012 PBP Evo X GSR
    WTF Tuned | Flex Fuel | Full ETS Bolt-Ons | Íhlins/SuperPro/Torque Solution Suspension
    SM #11
    SCCA Member # 467273 ← Use me as a referral for a membership discount!!
    NASA Member # 179774

  12. #12
    Senior Member
    Join Date
    Aug 2015
    Location
    Knoxville
    Posts
    112
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by flawlessninja View Post
    Does anyone change the ATF fluid in the "torque transfer" part of the rear diff when they change their gear oil? (typically every 15k or 30k miles depending on usage)

    I just changed the gear oil and left the ATF fluid alone. Since I typically race the car in OFF-OFF mode I didn't think the AYC pump or clutches had to work very hard, so the ATF fluid should still be fine, right?

    I just checked the fluid level in the reservoir after letting the car sit overnight and it's just below the max line.
    I have always done mine at the same time. It's not expensive, and doesn't take much fluid. I was under the impression that it has the same service interval as the rest of the driveline components, so I'd just do it.

  13. #13
    Junior Member
    Join Date
    Mar 2016
    Posts
    27
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would also suggest to drive it after filling, then refill. Both rear diff compartments.

  14. #14
    Junior Member
    Join Date
    Jun 2016
    Location
    Southern California
    Posts
    23
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i did this for the first time this past saturday. no complaints, pretty straight forward, messy as hell because i was doing under jack stands.

    - definitely recommend fill, move care, check fluid if necessary. Metal shavings on the tcase bolt

  15. #15
    Evo X Harlot UT_EvoX's Avatar
    Join Date
    Aug 2015
    Posts
    2,559
    Mentioned
    251 Post(s)
    Tagged
    0 Thread(s)
    We always do both fluids at WTF, to answer the previous question.

    Do make sure to invest in a syringe instead of a stupid hand pump for anybody who chooses to do this himself.
    350 WHP WW Flex Fuel 2014 Evo X MR | 600 WHP OB 2008 Evo X GSR

    Evo X Builder & Tuner since 2009 - Boosted Mitsubishis since 2005 | Buy fuel kits, flex fuel setups, or order an e-tune online: http://www.wtftuned.com/

    Follow us on Facebook: https://www.facebook.com/WTFTuned

  16. #16
    Junior Member
    Join Date
    Dec 2015
    Posts
    15
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I use a Mityvac syringe that I got on Amazon. Just wrap some electrical tape around the end until you get a good seal.




  17. #17
    Junior Member
    Join Date
    Aug 2016
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by flawlessninja View Post
    Does anyone change the ATF fluid in the "torque transfer" part of the rear diff when they change their gear oil? (typically every 15k or 30k miles depending on usage)

    I just changed the gear oil and left the ATF fluid alone. Since I typically race the car in OFF-OFF mode I didn't think the AYC pump or clutches had to work very hard, so the ATF fluid should still be fine, right?

    I just checked the fluid level in the reservoir after letting the car sit overnight and it's just below the max line.
    Haha, the same to me lol

  18. #18
    Senior Member pistolpete69916's Avatar
    Join Date
    Aug 2015
    Location
    CO
    Posts
    1,584
    Mentioned
    34 Post(s)
    Tagged
    0 Thread(s)
    FYI, AMSOIL sells a pump that actually fits their bottles perfectly down to the very bottom, and you can put in whatever fluid you want in them. Real headache saver for trans fluid change too.

  19. #19
    The guy we all owe money to
    Join Date
    Aug 2015
    Posts
    235
    Mentioned
    50 Post(s)
    Tagged
    0 Thread(s)
    Thread revival..

    Is motul atf (which doesn't mention atf sp iii) ok for the ayc fluid???

  20. #20
    Senior Member pistolpete69916's Avatar
    Join Date
    Aug 2015
    Location
    CO
    Posts
    1,584
    Mentioned
    34 Post(s)
    Tagged
    0 Thread(s)
    If its synthetic, and "ATF", then its likely good to go.

  21. #21
    Senior Member
    Join Date
    Aug 2015
    Posts
    414
    Mentioned
    19 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by tephra View Post
    Thread revival..

    Is motul atf (which doesn't mention atf sp iii) ok for the ayc fluid???
    yes. I've been running motul fluids for my whole drivetrain and havent encountered any issues.

  22. #22
    The guy we all owe money to
    Join Date
    Aug 2015
    Posts
    235
    Mentioned
    50 Post(s)
    Tagged
    0 Thread(s)
    ^ motul Multi atf right?

  23. #23
    Member Pool Playen Bob's Avatar
    Join Date
    Sep 2015
    Posts
    95
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    The ATF side of the diff is as simple as a drain and fill?

  24. #24
    Senior Member
    Join Date
    Aug 2015
    Posts
    280
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by flawlessninja View Post
    Does anyone change the ATF fluid in the "torque transfer" part of the rear diff when they change their gear oil? (typically every 15k or 30k miles depending on usage)

    I just changed the gear oil and left the ATF fluid alone. Since I typically race the car in OFF-OFF mode I didn't think the AYC pump or clutches had to work very hard, so the ATF fluid should still be fine, right?

    I just checked the fluid level in the reservoir after letting the car sit overnight and it's just below the max line.
    Uhh.......Off Off still has the AYC accelerator gears working in the rear diff.....which uses the pump and the clutch. AYC brake is where the pump and clutch isn't really used.

    Moral of the story: Change your ATF when you change your gear oil

  25. #25
    Senior Member
    Join Date
    Aug 2015
    Posts
    414
    Mentioned
    19 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by tephra View Post
    ^ motul Multi atf right?
    yup

Posting Permissions

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