gearbox oil and diff oil

[B&G Extreme Drifting]

Im going servicing my chaser and i was wondering what ye thought would be the best gearbox oil and diff oil for it....its the r-154 gearbox and just a standard diff...any info greatly appreciated,Thanks

syntrax gearbox oil wud b gud job as it covers most of the grades u wud need.....if lsd diff iv been told saf-xj is the job......these are castrol oils but no harm getting 2nd opinions.....