[TheOtherLeft]

Are Redline gear oils worth their money?

I have noisy rear diff, which was installed when I went to the airlocker. The diff is noisy but has been OK'd by the driveline specialist so it shouldn't crap it self anytime soon.

Redline "claim" it can reduce a noisy diff.

Has anyone tried it and is it worth it?

I can put up with the noise, which occurs between 50-60 and 100-110km/h, and my only other option is to change the ring/pinion.

[smileysmoke]

what kind of noise is it? if its a vibration it could be your unis or your tailshaft out of phase. (doesnt line up).
mine was unis and out of phase and i only had the issue at certain revs also.
with oil additives they are normally rather thick so i would personally only use what is recommended by the locker manufacturer.. lest you void your warranty if it does blow up..