Brake system

Has anyone ever bled/replaced their brake fluid? How often is it recommended? My G20 has 102,000 miles and the brakes seem to be needing more pressure to do the same braking. I am thinking the fluid is worn because my front pads and rotors were replaced recently and the backs still have some life.

Yes, you probably need to replace the bake fluid. It's dirty and it also has absorbed quite a bit of moisture. And it won't hurt anyway :)