[vash]

then someone comes along and goes, "hey my brake fluid is a bit low, let me top it off! there ya go, you little pcar, feel better?"

THEN, when you push the caliper pistons back, you overflo. most folks use a tool like a turkey baster to suck a bit of the juice out before pushing the pistons. use a new baster, and never ever let it get back together with another turkey.