SR3 - Gear drive unit - which oil and which sealer?

[LaurenceFrost]

When draining down the gear drive unit to change ratios, what is the recommended oil to refill with, and which type of sealer should be used when reassembling?

[LaurenceFrost]

Josh Smith said:

Hylomar Blue for sealing
Oil is Fuchs Titan Race SYN 5 75W-90 Fully Synthetic Gear Oil

Many thanks.