Gearbox Oil Choice? 2.3 T5 5 Speed

AndyV7o · Jul 12th, 2018, 21:06

Ive not had good experience with comma fluid before.
Either go genuine, or use a 75w80 of a high quality such as Motul Motylgear (gives a lovely smooth shift) dont use crap.
How is the gearshift? If its sweet and factory fresh, go genuine if ya want peace of mind. If its getting a little less sweet like it sometimes feels a little crunchy as it engages (which could just be tired oil anyway) it may be a little syncro wear, in that case a 75w80 may help the syncros keep up to speed (this can be a problem on vag boxes which also use straight 75 but a change to 75w80 usually sorts it, and is the grade of choice of transmission specislists and/or performance oriented users)
Dont use cheap stuff, especially not cheap Gl5, GL5 is ok if it states compatibility with brass syncros, some GL5's will eat syncro's. GL4 is fine no worries.
Don't use 75w90 it'll most likely make the shifts baulk.

Jul 12th, 2018, 21:06	#10
AndyV7o Premier Member Last Online: Jun 21st, 2021 20:47 Join Date: Jun 2018 Location: Creswell	Ive not had good experience with comma fluid before. Either go genuine, or use a 75w80 of a high quality such as Motul Motylgear (gives a lovely smooth shift) dont use crap. How is the gearshift? If its sweet and factory fresh, go genuine if ya want peace of mind. If its getting a little less sweet like it sometimes feels a little crunchy as it engages (which could just be tired oil anyway) it may be a little syncro wear, in that case a 75w80 may help the syncros keep up to speed (this can be a problem on vag boxes which also use straight 75 but a change to 75w80 usually sorts it, and is the grade of choice of transmission specislists and/or performance oriented users) Dont use cheap stuff, especially not cheap Gl5, GL5 is ok if it states compatibility with brass syncros, some GL5's will eat syncro's. GL4 is fine no worries. Don't use 75w90 it'll most likely make the shifts baulk. Last edited by AndyV7o; Jul 12th, 2018 at 21:11.

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