I need do some transmission fluid flush, coolant flush, change spark plugs, brake fluid flush, and change brake pads and rotors. I usually do it in dealer, but as my car getting older, I don't want to spend that much on it. I know Wal-mart can do transmission flush at $70, and coolant flush $50. Does anyone know is wal-mart good at this? or some other reliable and reasonable garage recommandations welcome