833 syncros

I heard you shouldn't run all synthetic more like 50/50 but I can't remember :BangHead: (might be noisy?) I used to run Redline and standard gear oil years back now just run standard gear oil. I believe it helps with shifting in colder weather, but my car sits all winter.
I'm sure someone will chime in and correct me. lol
Read this thread.
What fluid for a 4-speed trans?