you can use other oil if you only use kazz oil you will go bankrupt & you should read the book that came with the diff it gives you the maintenance intervals
:bigthumbu
I now work at Lehyman Auto world are car lines include Toyota,Subaru,Buick,Pontiac,GMC,Suzuki,Isuzu & Hyunai so if you guys need any thing lmk & I will see what I can do :bigthumbu oh & Mitsubishi