|
||||||
| Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) Everything related to the mechanical maintenance of the FR-S and BRZ |
 |
|
|
Thread Tools | Search this Thread |
05-30-2021, 09:27 AM
|
#1 |
|
WRBLUE BRZ
Join Date: Apr 2016
Drives: 2016 Subaru BRZ
Location: TH
Posts: 60
Thanks: 67
Thanked 8 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
MT trans fluid spec
Hi guys.
I just want to know your opinion about API spec for our MT fluid as i searched a lot about it and found that many people said use GL-4 spec but when I go for owner manual. It said GL-3 or upper grade or even in the 2018 manual which i found in online also spec for API GL-3, 4 and 5. Does GL-5 really safe for the synchromesh?  
|
|
|
|
05-30-2021, 02:28 PM
|
#2 |
|
Member
Join Date: Dec 2017
Drives: 2016 BRZ Limited
Location: SWFL
Posts: 22
Thanks: 12
Thanked 6 Times in 4 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
I know people on here swear by Motul Gear 300 which is GL-5 but my transmission felt like complete trash with that fluid. It was like a 1990s domestic. I have had great luck going to Red Line MT-90 which is GL-4. What I remember from looking for answers was that GL-4 was better than GL-3 in every way but GL-5 is fundamentally different and can attack yellow metals.
https://bobistheoilguy.com/forums/th...vs-gl-5.37720/ |
|
|
|
|
06-01-2021, 04:30 AM
|
#3 |
|
Member
Join Date: Jun 2018
Drives: MY14 86 GTS Manual Velocity Orange
Location: Australia
Posts: 77
Thanks: 4
Thanked 49 Times in 26 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
GL4 is fine for the gearbox, however GL5 is not recommended at all, do not use GL5 in the gearbox. GL5 for the differential only.
|
|
|
|
| The Following User Says Thank You to sneaky_pete For This Useful Post: | Wally86 (06-03-2021) |
|
06-01-2021, 05:41 AM
|
#4 |
|
Member
Join Date: Mar 2020
Drives: 2020 toyota 86
Location: mass
Posts: 55
Thanks: 1
Thanked 7 Times in 7 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Whats wrong with the factory fill??
|
|
|
|
|
06-01-2021, 07:07 AM
|
#5 | |
|
Senior Member
Join Date: Aug 2018
Drives: 2017 Toyota 86 (860 SE)
Location: Dayton, OH
Posts: 328
Thanks: 537
Thanked 434 Times in 167 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
|
|
|
| The Following User Says Thank You to Cephas For This Useful Post: | Wally86 (06-03-2021) |
|
06-01-2021, 12:10 PM
|
#6 | |
|
Senior Member
Join Date: Apr 2012
Drives: 22 BRZ (Previously 13 FR-S)
Location: USA
Posts: 5,794
Thanks: 2,164
Thanked 4,242 Times in 2,220 Posts
Mentioned: 48 Post(s)
Tagged: 2 Thread(s)
|
Quote:
https://d23zpyj32c5wn3.cloudfront.ne...pdf?1492016023 That said, I don't think it's any better than stock for cold shifts. I use it primarily for the shear protection at the track, but if I was doing a lot of daily driving, I'd probably try something else (like the Redline MT90 you mentioned).
__________________
"Never run out of real estate, traction, and ideas at the same time."
2022 BRZ Build 2013 FR-S Build |
|
|
|
|
|
|
|
|
|
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Looking to change my trans and diff fluid soon, what your guy's go-to and why? | 1234eher | Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) | 68 | 06-22-2023 11:34 PM |
| What Manual Trans Fluid Do You Use? | McG86 | CANADA | 50 | 03-22-2020 08:19 PM |
| FRS/BRZ Manual Trans Fluid | shellslinger | Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) | 131 | 11-02-2017 10:44 AM |
| Change trans fluid thru dipstick | bigsley18 | Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) | 8 | 07-18-2013 10:16 AM |
| Trans/Diff Fluid. | DanoFA20 | Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) | 18 | 01-11-2013 03:11 PM |
