Brake Fluid and Lubrication

the brake fluid reservoir is at the back of the engine bay, to get to it you need to remove the large trim that covers the entire width of the car underneath the windscreen wiper control arms.

once this is off you will see the resivoir at the back left of the bay.

In the transaxle. Just giving you A hard time, You need to give more info. Make? Model? Year? Auto? Manual?

if you are loosing brake fluid and there is no sign any leaks 2 possable answers first answer if you have to add fluid every 2 to 4 days or once a week it is going in to the brake booster or if you just notice it was low that means your brakes are wearing down and that is nomal the fluid is filling up the space in the calipers as the pads wear so it depends on your situation need more info

DOT 3

According to the 2000 Mercury Mountaineer Owner Guide :

( Yes , DOT 3 brake fluid , meeting Ford specification ESA-M6C25-A )

Most likely the brake fluid will corrode and eat-away the seals on your power steering system.

Brake fluid has a mineral in it that the rubber seals of the PS system can't handle.

If you drive it long enough you'll either get severe leaks, or potentially the pump will seize.

Best advice is to drain the system, fill with proper PS fluid, run it, then drain again.

Get clear fluid if you can so you can tell when the brake fluid is out.

This will likely take a few bottles

Dot 3

My brake fluid reservoir is clear plastic with a thread on cap , there is no dipstick ,

there is a maximum fill mark on the white plastic reservoir

Replace the line that is leaking, and do not try any stop leak.

It will reduce the boiling point so much your brakes will quit working after a few stops.

It means to be exactly on time, "He arrived on the dot at six o'clock."

it is in the front of the car in the spare tire well.

it sits behind the spare tire along with the windshield washer fluid

The Drum is bad and needs to be fixed asap. Seriously. I lost my brakes because of that and almost t-boned another car. Get it fixed. Forget the cost. The brake cylinder could be leaking more than likely.

Could be the master cylinder, booster, or the brake cylinders. If the pistons in the wheel cylinders are jammed up, you don't have any braking on that wheel at all. Does the pedal stay steady when you hold the brake down? If not, it could be a leaking master cylinder. With power brakes, if the booster isn't working it takes a lot more pedal force to apply brakes than you expect, which would also lead to long braking distances. Another thing to look for is the brake pads/shoes or rotors/drums have not glazed over. The effectiveness of the braking action will be greatly diminished with either surface being glazed - rough up the pad surface, or have the rotors lightly turned. On a similar thought, if the pads / shoes have become contaminated with grease, oils or similar, they'll need to be replaced.

Call poison control.

get out your owners manual

Master cylinder reservoir should be located on the firewall at the driver's side under hood

There is no need to reset it there is way to reset it if the valve is a problem it has to be replaced I think there is another problem but I have no way of knowing what it could be

Disconnect brake line at the nearest junction

Disconnect brake line at the affected wheel cylinder

Route new brake line same way old one was

Connect both ends

Bleed the wheel cylinder on that line

MAKE SURE MASTER CYLINDER DOES NOT RUN EMPTY

There is a temporary solution. It's additive you can get it in AutoZone. It's highly recommended brake leaks as soon as possible by replacing gaskets and/or hoses.

DOT ( 3 ) or DOT ( 4 ) brake fluid , according to the Owner Guide

In a 1999 Ford Taurus :

( DOT 3 brake fluid meeting Ford specification ESA-M6C25-A )

Underneath drivers side ac cabin air filter remove filter and remove the housing it's right under there