Will be changinf trans / rear diff oils this coming week or so.

I'm settled on Syntrax 75W90 for the G/B

Rear diff is another matter though - seems to depend on whether its a LSD- (need an LS compat oil) or not-(syntrax will be OK).

Anyone know how I identify wherther I've got an LSD or not ('97 Jap Import Sti V-ltd)

 

You have an LSD.

 

As the man says. You will need a proper LSD oil.

 

Cheers - LSD Castrol LS purchased....