Welcome along! Please introduce yourself in the "Introductions" section:
From a quick look off the Castrol website:
-MANUAL TRANSMISSION-
CASTROL MULTITRAX
Manual transmission and differential fluid providing improved gear shift over a wide range of temperatures, particularly cold shift performance. Also suitable in secondary drive axles (front and rear) of 4WD's, for reduced drag and enhanced fuel efficiency, especially in around town service. SAE 80W90, API GL5.
or CASTROL SYNTRAX 75W-90
Service Refill Capacity: 3.5 Litres.
-4WD DIFFERENTIAL-
CASTROL MULTITRAX
Manual transmission and differential fluid providing improved gear shift over a wide range of temperatures, particularly cold shift performance. Also suitable in secondary drive axles (front and rear) of 4WD's, for reduced drag and enhanced fuel efficiency, especially in around town service. SAE 80W90, API GL5.
or CASTROL SYNTRAX 75W-90