Replaced transmission fluid, now it's causing problem - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Riotsoup · 07-18-2016, 01:16 PM

I honestly didn't think resetting the ECU would work but wanted to eliminate that option. I know the ECU knows what gear I'm in. You can select the option to display the gear next to the trip meter. So it's more of a passive system and I think that is the extent.

I'm fairly certain that it is a friction issue. I still haven't changed the fluid.

saj · 07-18-2016, 01:40 PM

Motul ftw

Ultramaroon · 07-18-2016, 01:56 PM

Quote:

Originally Posted by Riotsoup

I honestly didn't think resetting the ECU would work but wanted to eliminate that option. I know the ECU knows what gear I'm in. You can select the option to display the gear next to the trip meter. So it's more of a passive system and I think that is the extent.

I'm fairly certain that it is a friction issue. I still haven't changed the fluid.

Gear indication is calculated via engine/wheel speed ratio.

Riotsoup · 09-23-2016, 01:56 PM

Got around to changing the fluid last weekend. I decided to go with pennzoil synchromesh. It is the only API GL-3 I could find. Immediately my woes disappeared. Every shift is smooth and happy, which makes me happy

swftbrz · 10-13-2016, 07:30 PM

I elected to replace MTF and LSD with Amsoil products at 30k. The shift lever feels lighter and more fluid though cold 2nd gear is still a disappointment.

5k miles after the swap the LSD started making a lashing/click/metallic sound when pulling away in 1st at any speeds. Feeling pretty well misled by this forum and lots of Amsoil fanatics saying it was the solution.

frslee · 10-13-2016, 09:46 PM

Quote:

Originally Posted by swftbrz

I elected to replace MTF and LSD with Amsoil products at 30k. The shift lever feels lighter and more fluid though cold 2nd gear is still a disappointment.

5k miles after the swap the LSD started making a lashing/click/metallic sound when pulling away in 1st at any speeds. Feeling pretty well misled by this forum and lots of Amsoil fanatics saying it was the solution.

I'm not sure why, but results vary throughout any car. I once used Amsoil MTF, but never again. I've been happy with Pennzoil Synchromesh and Redline MTF/MT90.

tracerit · 10-19-2016, 04:39 AM

I should also mention that I switched from stock to Amsoil early on when I got the car. Noticed the same grind 6 to 5 above 70mph. Reproducible too. Dealership didn't want to address it so I just switched fluidls to Motul 300 and it disappeared right away.

PunX · 10-26-2016, 09:58 AM

I have another very cool solution to this. go like 3 inch straight pipe with catless header and it will warm up gearbox with glowing red exhaust pipe, it's a true WIN/WIN!!!

504 · 11-01-2016, 11:03 PM

Quote:

Originally Posted by PunX

I have another very cool solution to this. go like 3 inch straight pipe with catless header and it will warm up gearbox with glowing red exhaust pipe, it's a true WIN/WIN!!!

There is actually a lot of truth in this

I've tried ALL MTF fluids you can think of in the span of 5000km. I was never happy with any until i settled with pentosin mtf2 (isnt perfect but the closest thing to it). One thing all fluids had in common was after some spirited driving the gearbox would perform to perfection, not even the slightest notch just pure butter.

After wasting 500+ dollars on fluid I've come to the conclusion that the tranny doesnt reach a temperature to achieve the consistent shift performance I desire. Being RWD, the transmission doesnt reside in the engine bay and the relatively flat underbody of the car would pull alot of air out from around the transmission area due to air pressure differential (relatively high pressure around tranny and engine bay, with relatively low pressure fast air under underbody).

P.S. it sounds worse than I say it, shifts alright now even in cold, you can feel the synchros catching in 2nd and 3rd though

THOUGH I loved the stock fluid performance, so everything I just said could be irrelevant... hmmm

TruRace · 11-02-2016, 05:35 PM

I switch to a Amsoil recently, was previously using Motul. Can't say that it feels any worse or better. Don't have problems getting into any gear up or down shifting.

Sent from my iPhone using Tapatalk

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07-18-2016, 01:16 PM	#29
Riotsoup Junior Member Join Date: Oct 2015 Drives: 2015 BRZ Limited, 2014 Passat TDI Location: Tri-Cities, WA Posts: 4 Thanks: 0 Thanked 3 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I honestly didn't think resetting the ECU would work but wanted to eliminate that option. I know the ECU knows what gear I'm in. You can select the option to display the gear next to the trip meter. So it's more of a passive system and I think that is the extent. I'm fairly certain that it is a friction issue. I still haven't changed the fluid.

07-18-2016, 01:40 PM	#30
saj Member Join Date: Jan 2015 Drives: FR-S 10 Series Location: Los Angeles Posts: 67 Thanks: 138 Thanked 33 Times in 22 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Motul ftw

09-23-2016, 01:56 PM	#32
Riotsoup Junior Member Join Date: Oct 2015 Drives: 2015 BRZ Limited, 2014 Passat TDI Location: Tri-Cities, WA Posts: 4 Thanks: 0 Thanked 3 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Got around to changing the fluid last weekend. I decided to go with pennzoil synchromesh. It is the only API GL-3 I could find. Immediately my woes disappeared. Every shift is smooth and happy, which makes me happy

10-13-2016, 07:30 PM	#33
swftbrz Junior Member Join Date: Jul 2015 Drives: Dark Gray BRZ Premium Location: Carmel, CA Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I elected to replace MTF and LSD with Amsoil products at 30k. The shift lever feels lighter and more fluid though cold 2nd gear is still a disappointment. 5k miles after the swap the LSD started making a lashing/click/metallic sound when pulling away in 1st at any speeds. Feeling pretty well misled by this forum and lots of Amsoil fanatics saying it was the solution.

10-19-2016, 04:39 AM	#35
tracerit Senior Member Join Date: Aug 2012 Drives: '13 SSM BRZ Limited 6MT Location: Orange County, CA Posts: 1,067 Thanks: 593 Thanked 198 Times in 137 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I should also mention that I switched from stock to Amsoil early on when I got the car. Noticed the same grind 6 to 5 above 70mph. Reproducible too. Dealership didn't want to address it so I just switched fluidls to Motul 300 and it disappeared right away.

10-26-2016, 09:58 AM	#36
PunX Member Join Date: Sep 2014 Drives: GT86 - minor mods Location: Estonia Posts: 21 Thanks: 0 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have another very cool solution to this. go like 3 inch straight pipe with catless header and it will warm up gearbox with glowing red exhaust pipe, it's a true WIN/WIN!!!

11-02-2016, 05:35 PM	#38
TruRace Senior Member Join Date: Sep 2013 Drives: FRS-Raven-MT Location: Ft. Lauderdale, FL Posts: 336 Thanks: 58 Thanked 143 Times in 99 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	I switch to a Amsoil recently, was previously using Motul. Can't say that it feels any worse or better. Don't have problems getting into any gear up or down shifting. Sent from my iPhone using Tapatalk

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