Diaqueen LSD is GL-5. Has an odd smell to it from some type of additive and the only gear oil I've smelt that smells like the Diaqueen is Motorex Prisma ZX.

 

in all the years my car has been on the road its only had oem fluids with exception of the engine oil... however i do run oem oil filter...

after a long winded conversation with jack's transmission reps about fluids i was told you can run oem lsd oil, or shockproof in the tcase fill plug side of the tcase... however do not run it in the trans... either mt90 or oem fluid for the oem trans... if you have a wavetrac front diff motul is expectable.

that confusing tcase fill plug side of the tcase is because part of the tcase receives its oil from the transmission rather then what you poor into it... in fact it contains 3 different lubricants if you have acd