Now , while I can and have changed my vehicles fluids, from engine , gearbox , t-case , both diffs, brake and the like included, I hate crawling around under vehicles.
That said..
The local office for the "dealership" for my make/ model of car has a 3 week waiting list for a simple handbook service, offers surly rude staff, and charges 50% on what the local mechanic does.
Thus I take it to the local place that can get it done in 2-3 days.