Originally Posted by TL Dream
Good question. I've been sucking the fluid out of the reservoir and replacing it every other oil change (once a year) for many many years. Would this be sufficient? I'm also still on the original pads on my 09 at 70k mile with about 3mm left in the rear. I figured if I ever did a brake job, I'd do a full line flush then.
this isn't a good method, as a good portion of fluid stays within the brake lines and never changes. The fluid in the actual lines is likely well worn. If you don't drive your vehicle hard, it likely isn't an issue though. If it gets really old, the lines start to rust from the inside. That's not a good thing.
It's actually really easy to bleed brakes. I used to be afraid to touch them, but it's not something you can really screw up. It's easier with two people, but you can definitely do it yourself without issue.
All you need is a plastic coke bottle, a hole through the cap and a rubber hose going through the hole (has to be a tight fit). Just need to make sure the hose fits over the bleeder nipple on you brake calipers. I think it's 1/4", but don't quote me on that. I just get some flexible hose from Home Depot. 2-3 feet of it is more than plenty.
Anyway, put some fluid into the bottle- fill it about 3-4 inches. Make sure the hose is all the way to the bottom. Slap the other end of the hose onto the caliber nipple, unscrew it, make sure the brake reservoir is full, and pump the pedal. Repeat adding fluid to reservoir and pumping the pedal, until the fluid coming out is clean.
The only thing to remember is doing the brakes in the right order. I don't know what it is off the top of my head, but you can easily find it here on AZ.