Bleed and refill?

[Donald]

The brakes and brake lines need to be inspected. All is not right with the brake system as a whole.

There are only two things that can cause low brake fluid. A leak or all the pads shot and the pistons are extended a lot.

 

[supton]

If it still had brakes, then it doesn't need bleeding--it hadn't fully run out.

Now, why was it so low? I'd be doing a very thorough inspection, and if nothing was found, checking that master cylinder a whole lot more often!