Do I have a brake fluid leak?
try bleeding the brake system, that's the cheapest place to start, if it still loses fluid it could be leaking internally into the booster, if it isn't leaking any fluid you could have a master cylinder on its way out, or your brake pads are getting low, also check the rear brake wheel cylinders for leaks (if it has rear drum brakes)
How previous is that this element??? replace the wonderful front caliper. purchase some new real FORD brake fluid (purely). And bleed out each and everything. the only reason the caliper is leaking is via the fact the brake fluid has broken down with age, develop into acidic, and has began to soften the rubber seals around the piston. Brake fluid purely final for roughly 2-3 years. the reason to apply purely the Ford fluid is via compatibility. DOT 3 and DOT 4 are purely incredibly some the specs. the certainty is that each and every person brake fluids are created from diverse chemicals and can in no way be blended jointly. ecu brake fluid is a synthetic vegetable oil, for example. in no way use primary brake fluid. you may restoration the front precise on your Aerostar, yet try this understanding that the completed gadget desires rejuvenating. SEE??
The brakes need a visual inspection, no cost at most places that service brakes. You definitely need service of some sort - the only two reasons for low brake fluid are wear of disk brakes or a leak. Either one needs to be corrected, right away. You don't want your brakes to become like the ones on the right in the first source.