Help! I have brake fluid dripping from below the left front of my '92 940.
I got under the car and checked behind the left front tire and saw no sign of
brake fluid. Followed the brake line under the car and didn't notice any there either. About every 500 miles the brake pedal goes lower to the floor and I replace some fluid. I noticed that the "drip" seems to be coming from under
the spot wear you add the fluid. It's a box shaped "thing" and I'm ot quite sure
what it is?....

 

probably the master cylinder or reservoir the plastic pizza slice shaped box. They are inexpensive 60 dollars? and easy to replace just putting back the fluid and bleeding the lines is nasty and must be careful.

 

Either that or the brake junction block mounted on the inside driver side frame rail. It's an "octopus" with two brake lines going in and 6 going out. In the center is the brake failure sensor w/ an electrical connector. If it's leaking, there is no repairing it...it must be replaced.