Re: Visually low brake fluid

Author	All Replies
Doctor Olds I Need A Remedy For What's Ailing Me. Premium,VIP join:2001-04-19 1970 442 W30 kudos:18	reply to bruin23 Re: Visually low brake fluid said by bruin23: I went in for a routine oil change today and also had a visual check up on my car. Everything was fine except for the brake fluid, which was visually low. What could this mean? I know brake fluid levels should stay the same so should I see a mechanic ASAP in case there's a leak? Brake fluid level drops as the pads wear and the fluid displaces the pistons in the caliper bores. This is 100% normal operation. If you add brake fluid, you will later find that there is too much when you replace the pads. This happens because the caliper pistons have to be reseated pushing the caliper stored fluid back up into the master cylinder and reservoir which will then very likely leak now from the master cylinder and reservoir becoming over full. -- What’s the point of owning a supercar if you can’t scare yourself stupid from time to time?
	to forum · permalink · 2012-02-25 01:00:17 ·

BurntCrikt @rr.com	said by Doctor Olds: If you add brake fluid, you will later find that there is too much when you replace the pads. This happens because the caliper pistons have to be reseated pushing the caliper stored fluid back up into the master cylinder and reservoir which will then very likely leak now from the master cylinder and reservoir becoming over full. That is why you remove the master cylinder cap when compressing the calipers back and suck out any extra fluid.
	to forum · permalink · 2012-02-25 06:58:57 ·

Technical > Automotive > Visually low brake fluid