Metal in Trans Fluid

[bigjae46]

I'm anecdotally convinced that redline eats synchros, have stopped using anything but CV-2 from them.

I never liked the D4ATF. I run MT90 in my ZF320 which is a little higher in viscosity 75w-90.

[eacmen]

I never liked the D4ATF. I run MT90 in my ZF320 which is a little higher in viscosity 75w-90.

I'm actually thinking the lighter weight oil won't develop thick film on the synchro friction surface. I have some 90 weight to try as well but the issues have don't seem to matter whether the fluid is cold or hot.

[eacmen]

I had really good success with Ravenol MTF-2, ran that for a while and flushed every 2-3 events I believe. The old six speed would grind on fast shifts in 3 and 4 when cold but when it warmed up it was fine. I'm testing out Motul Gear Power 75w-80, the GL-4 one because there's also a GL-5 one, on the ZF320 I just put in.

Curious did you actually run MTF-2 or theBMW specific MTF-LT-2 from Ravenol?

[CrookedCommie]

This is what I was ordering :
Ravenol Gear Oil MTF-2 75W-80 GL-4 1L

[oceansize]

I use Ravenol as well. This is what I buy.

https://www.amazon.com/dp/B00FGXB15O