Ok so one person says 90 weight oil and the other says 30 weight oil. Well when installing it, it was leaking a thick dark grey out the front bottom 2 holes and the oil stoped leaking once it was bolted to the t-case mount and crosmember. That looks like gear oil to me so I am thinking 90 weight was correct. Well now that its in, I pulled out the lowest bolt in the rear to drain it fully and the oil there and as it drains, it looks to be thinner with a golden color like regular motor oil, so now I am thinking that the 30 weight was correct. Since my 203 has a part time kit, are there 2 different oil fill and drain areas or is the fill in the rear the only one and all the oil is shared in all parts of the t-case? If it is separate, where is the 2nd fill point and if its the same, what do I use...30 weight or 90 weight? Thanks.