Anyone ever change out their brake fluid? I seem to remember the service writer asking if I wanted to flush and change mine as part of one of the regular preventative maintenance services. I figured that it was just the dealership trying to generate some extra billable cost, but lately petal seems a bit spongy. Anyone know if it could be related? I have never performed any service that would cause me to require brake bleeding, at my last oil change I asked them to check it out and they told me it was probably a booster but didn't have the part in stock. I have a hard time believing this assessment since the booster should have no bearing on soft or spongy petal.