Finally, we filled the differential with fresh
synthetic gear oil.
If you launch a boat with your all / four - wheel drivers and the axle (s) get submerged, you would be best advised to have the fluid changed on at least an annual basis (if not more often) using fully -
synthetic gear oil.
I have never used
Synthetic gear oil.
Not exact matches
This
gear oil is identified in GM documentation as a
synthetic 75W - 85 GL - 4, Castrol Burmah (BOT 0063) manual transmission fluid, and is validated as «fill - for - life».
AMSOIL Inc.: Premium
synthetic lubricants,
gear oil, additives and filters.