Just changed my fluid and wanted to share my experience.
I've tried the following and provided their Kinematic viscosity at 100°
Stock -~6
Pentosin FFL4 -7.7
BG Synchroshift 2 -7.11
BG Synchroshift 2 and Ceretec
Motul 300 -14.2
I've found that while a thicker fluid results in less notchiness, clunkiness and noise, going too thick/slippery results in poor synchro performance as the thicker fluid sticks to the synchro and causes mesh issues.
This is what I was finding with Motul 300.
While all of the other options were too thin at around 7 cst, Motul 300 was double at 14.
I know everybody swears by Ravenol MTF 2 and I haven't tried it so I can't knock it but it's viscosity is close to all the other thin ones so I didn't bother.
I mixed 1 quart of 300 with 1.2 quarts of Redline DCTF resulting in a kv100 of 10.06 and it feels perfect for me.
Most of the benefit of thicker fluid with no mesh issue.
They are both GL4 fluids and after research likely fine to mix.
Anyone else experiencing mesh issues especially at high rpm that are running Motul 300 I recommend looking for something in the 10 Cst Kv100 viscosity range.
I've tried the following and provided their Kinematic viscosity at 100°
Stock -~6
Pentosin FFL4 -7.7
BG Synchroshift 2 -7.11
BG Synchroshift 2 and Ceretec
Motul 300 -14.2
I've found that while a thicker fluid results in less notchiness, clunkiness and noise, going too thick/slippery results in poor synchro performance as the thicker fluid sticks to the synchro and causes mesh issues.
This is what I was finding with Motul 300.
While all of the other options were too thin at around 7 cst, Motul 300 was double at 14.
I know everybody swears by Ravenol MTF 2 and I haven't tried it so I can't knock it but it's viscosity is close to all the other thin ones so I didn't bother.
I mixed 1 quart of 300 with 1.2 quarts of Redline DCTF resulting in a kv100 of 10.06 and it feels perfect for me.
Most of the benefit of thicker fluid with no mesh issue.
They are both GL4 fluids and after research likely fine to mix.
Anyone else experiencing mesh issues especially at high rpm that are running Motul 300 I recommend looking for something in the 10 Cst Kv100 viscosity range.