So, I just got my first g35 last week and its a pretty HUGE change from a buick park avenue and I love this car to death. I need to do some maintenace such as transmission fluid, power steering fluid, coolant, differential fluid and possibly switch out my belts. I need to flush all my fluids.

What do you think is the best way to go about getting all of this done. I have a friend who works at a lexus dealership who said he would help me out if I bought all the needed stuff. Or what about going through a dealership or nat'l chain? Just need some help since I am new to the "G lyfe".