damania01

Hello Everyone! My car finally reached 30k miles.. I was debating on what major fluids i should have changed by the Stealership. My Car is an 09 G37x Sedan.. I searched the forums but could not find a thread specific to my exact car. I looked in the maintenance book and i will be changing out the air filters and cabin filter myself (thanks for the D.I.Y's). I plan on rotating the tires myself. Now the question is, should i get my rear differential fluid changed at 30k miles? Also in the manual it states transfer case oil.. Should i be concerned about changing that too? Also i was planning on getting a coolant flush done also (same coolant for almost 2 yrs now).. I was planning on getting the minor stuff done before i go to the dealership.. Its just the fluids im concerned about getting changed.. Which ones should i have changed out during my next visit and which ones should i hold off on and till what mileage? Thanks for the help!!