Hi people, im about to do a the big service dur to the car is been parked in my garage for the past 7 months. im going to change the engine,gearbox and standard diff oil. Im going to use Castrol Edge Sport for engine oil, but i dont know what i should use for the gearbox and diff. What you guys recommand..any reply will help.. BTW,my car is a R34 auto and fully stock.. thanks