hey bud,
would love to help but if you could type your post in grammatically coherent sentences it would help a lot
this isn't texting.
as far as "thicker" diff oil is concerned:
- in the center diff thicker oil allows power to be transferred to all 4 wheels more equally. I like to put it in real car terms but in the newer Subaru STIs you can adjust the bias of power from Front to Rear. thicker diff oil will move you towards a 50-50 F/R power bias. If you go thinner than inherently you are moving the curve to the front with, say for example, a 60-40 or 70-30 F/R power bias
if your on a loose track, my personal suggestion would be to run 5F, 5C, and either 2 or 3K in the rear. that should put you in the ball park and everything else should be chassis changes