Hello guys, i decide to change oil in diff and in 5spd gearbox on my Coupe Quattro 2.3 20V. But i am not sure whats the right specifications of oils. I read something on 20v.org
Rear Differential
0.8 quart of synthetic GL-5 hypoid oil, which corresponds to Redline's 75W90
Transmission/Front Differential
Synthetic GL-4 75W/90 oil is shared by the transmission, front diff., and the TORSEN center diff. DO NOT use GL-5 oil in the tranny!
but amsoil plan http://www.amsoil.com/mygarage/vehic...90%20QUATTRO+R
Rear Differential
GL-4
Manual Transmission,01A (5-SPD).....
SL148 - GL-4
FUCHS -
So now i am little bit confused and i do not do a mistake with oils...Any suggestions? I want to be a 100% sure of the right choice....27 years old car is 27 years old car
Thank you
Rear Differential
0.8 quart of synthetic GL-5 hypoid oil, which corresponds to Redline's 75W90
Transmission/Front Differential
Synthetic GL-4 75W/90 oil is shared by the transmission, front diff., and the TORSEN center diff. DO NOT use GL-5 oil in the tranny!
but amsoil plan http://www.amsoil.com/mygarage/vehic...90%20QUATTRO+R
Rear Differential
GL-4
Manual Transmission,01A (5-SPD).....
SL148 - GL-4
FUCHS -
So now i am little bit confused and i do not do a mistake with oils...Any suggestions? I want to be a 100% sure of the right choice....27 years old car is 27 years old car

Thank you
