6MT Transmission Fluid Recommendations - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SXE10 · 09-18-2014, 10:51 PM

Anyone tried MotylGear 75W-80 https://www.motul.com/system/product...pdf?1328624012
Vis@40°C 58.8
Vis@100°C 10.1
VI 160

or Redline MT-85 http://www.redlineoil.com/product.aspx?pid=140
Vis@40°C 64.3
Vis@100°C 12
VI 172

The long term effects of running something as thin as Pentosin/ATF has to be detrimental to the integrity of the gearbox when the factory spec is 75W-90 surely.

imom · 09-19-2014, 01:05 AM

Quote:

Originally Posted by SXE10

Anyone tried MotylGear 75W-80 https://www.motul.com/system/product...pdf?1328624012
Vis@40°C 58.8
Vis@100°C 10.1
VI 160

or Redline MT-85 http://www.redlineoil.com/product.aspx?pid=140
Vis@40°C 64.3
Vis@100°C 12
VI 172

The long term effects of running something as thin as Pentosin/ATF has to be detrimental to the integrity of the gearbox when the factory spec is 75W-90 surely.

MTL was slightly better than stock. I don't recommend it... and unless you track, I wouldn't recommend Motul either since it's thicker than MTL. Pentosin was best for me.

Saying Pentosin is too thin... well it's stock for my previous car Z4M and most BMWs. Too thick is no good either unless you heat up the gears such as track applications...so mean time the gears aren't lubricated well and have hard time shifting. For most folks...I say go with Pentosin.

surcy · 09-19-2014, 08:05 AM

I have been using the Pentosin MTL for 1000 miles and it is night and day better than stock fluid--all gear changes smooth and consistent.

Ferrari · 09-21-2014, 11:44 AM

Update: I changed transmission fluid to Pentosin MTF2. The gear changes are much better when cold. It's not exactly smooth when fully warmed up, but I probably need to give it some time. It's ok so far.

viscositosis.rex · 09-21-2014, 12:44 PM

The thin fluids don't shear. There is no risk-just more efficient shifting.

roddy · 09-21-2014, 01:02 PM

Give it a week or so...

Ferrari · 12-09-2014, 03:43 PM

Update: I've been running Pentosin MTF2 in my transmission for the past 10K Km. Initially it wasn't that smooth and didn't like it too much, but once the transmission and fluid got some kilometers on them, things just smoothed out. Now it's very smooth when warmed up, and very driveable when cold. I recommend...

cywinr · 12-09-2014, 06:22 PM

Quote:

Originally Posted by Calum

Motul sucks in the cold. Absolutely terrible, as I'm presently finding out. I'm gonna have to see about pentosin.

How cold? Is -10 still ok?

Ferrari · 12-09-2014, 06:44 PM

Quote:

Originally Posted by cywinr

How cold? Is -10 still ok?

I had problems with it when it was +10*C. At -10*C you probably can't use 2nd gear until the transmission warms up.

Calum · 12-09-2014, 06:47 PM

Quote:

Originally Posted by cywinr

How cold? Is -10 still ok?

It was about +10 and when the transmission was cold it was almost undrivable.

I switched to a 50-50 mix of redline mt-90 and mt-85. It worked well. The car is in storage now so I didn't test it in sub zero temps. I wouldn't mind trying straight mt-85, but it'll be a while before I'm changing the fluid again.

kiichiro · 12-09-2014, 07:43 PM

yay

cywinr · 12-09-2014, 08:23 PM

Quote:

Originally Posted by Ferrari

I had problems with it when it was +10*C. At -10*C you probably can't use 2nd gear until the transmission warms up.

Quote:

Originally Posted by Calum

It was about +10 and when the transmission was cold it was almost undrivable.

I switched to a 50-50 mix of redline mt-90 and mt-85. It worked well. The car is in storage now so I didn't test it in sub zero temps. I wouldn't mind trying straight mt-85, but it'll be a while before I'm changing the fluid again.

Wow... that's unacceptable! And I have 4 quarts of Motul 300 sitting here right now...

Calum · 12-09-2014, 09:38 PM

Quote:

Originally Posted by cywinr

Wow... that's unacceptable! And I have 4 quarts of Motul 300 sitting here right now...

Throw them on the forsale board, see if someone in Seattle or something will buy them.

It's funny, I've heard nothing but good about Motul, but this one experience hasn't been very positive. More than likely though, that's not the fault of Motul. They just make an oil that fits the spec Toyota & Subaru stamped on the transmission. Gem was likely correct to go to a lower viscosity fluid. Due to local availability though, I'm probably going to stick with redline. I've had very good experiences with their stuff in the past.

Chanpion · 01-25-2015, 12:57 AM

@Ferrari Have you been out in -20ish weather yet? Curious. I'm guessing there are not as many twin owners as you go to colder places.
It's was averaging -25 a few weeks ago for me and I wouldn't mind having a working 1st and 2nd gear.

09-21-2014, 01:02 PM	#20
roddy Senior Member Join Date: Apr 2012 Drives: '13 Ultramarine Location: Ontario Canada Posts: 2,243 Thanks: 1,476 Thanked 1,165 Times in 685 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Give it a week or so... __________________ no man with a good car needs to be justified...

12-09-2014, 07:43 PM	#25
kiichiro corolla specs/GTR looks Join Date: May 2013 Drives: ooh oooh pretty tail lights Location: slower than a accord V6 Posts: 490 Thanks: 229 Thanked 113 Times in 79 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	yay __________________ SOLD THEM BOTH Hers: 2007 987S Mine: 2012 991S That was fun, thanks Hachi

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09-18-2014, 10:51 PM	#15
SXE10 Member Join Date: Aug 2012 Drives: Altezza RS200-Z 6MT Location: Manukau Toyota NZ Posts: 85 Thanks: 14 Thanked 26 Times in 16 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Anyone tried MotylGear 75W-80 https://www.motul.com/system/product...pdf?1328624012 Vis@40°C 58.8 Vis@100°C 10.1 VI 160 or Redline MT-85 http://www.redlineoil.com/product.aspx?pid=140 Vis@40°C 64.3 Vis@100°C 12 VI 172 The long term effects of running something as thin as Pentosin/ATF has to be detrimental to the integrity of the gearbox when the factory spec is 75W-90 surely.

09-19-2014, 08:05 AM	#17
surcy Member Join Date: Jun 2014 Drives: 2014 BRZ Limited Location: Greenwood, SC Posts: 17 Thanks: 0 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have been using the Pentosin MTL for 1000 miles and it is night and day better than stock fluid--all gear changes smooth and consistent.

09-21-2014, 11:44 AM	#18
Ferrari Member Join Date: Jun 2014 Drives: Taking the bus Location: Toronto, ON Posts: 66 Thanks: 5 Thanked 15 Times in 12 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Update: I changed transmission fluid to Pentosin MTF2. The gear changes are much better when cold. It's not exactly smooth when fully warmed up, but I probably need to give it some time. It's ok so far.

09-21-2014, 12:44 PM	#19
viscositosis.rex Senior Member Join Date: Jun 2013 Drives: Currently 2018 Taco Location: san jose CA Posts: 152 Thanks: 16 Thanked 41 Times in 31 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	The thin fluids don't shear. There is no risk-just more efficient shifting.

12-09-2014, 03:43 PM	#21
Ferrari Member Join Date: Jun 2014 Drives: Taking the bus Location: Toronto, ON Posts: 66 Thanks: 5 Thanked 15 Times in 12 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Update: I've been running Pentosin MTF2 in my transmission for the past 10K Km. Initially it wasn't that smooth and didn't like it too much, but once the transmission and fluid got some kilometers on them, things just smoothed out. Now it's very smooth when warmed up, and very driveable when cold. I recommend...

01-25-2015, 12:57 AM	#28
Chanpion Senior Member Join Date: Sep 2014 Drives: 13 FRS Satin Location: Alberta Posts: 162 Thanks: 25 Thanked 60 Times in 41 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	@Ferrari Have you been out in -20ish weather yet? Curious. I'm guessing there are not as many twin owners as you go to colder places. It's was averaging -25 a few weeks ago for me and I wouldn't mind having a working 1st and 2nd gear.

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