Flushing brake lines may be all and good, but todays vehicles have improved so much over the years that the dealer has no work to do so they make work. 3000 mile oil changes? Brake flush? just 2 of the many things to get you back into the service bay. Unless brake fluid has changed so much, my 2nd to last vehicle had 250k+ and was 27 years old and never had a transmisson oil change nor brake fluid change. It got new cooling fluid when I had to change the water pump. The transaxle and rear end were never changed nor where to front or rear wheel bearings greased Luck, I don't know.