Step 1. Purchase a Danco Tub Drain Gasket from Home Depot (98 cents)


Step 2. Remove Brake Reservoir Cover and place gasket on the outside of the container.


Step 3. Replace Reservoir cover and tighten down.


Nice tight fit...no worries of contaminating the brake fluid with a foreign substance. I did wet the gasket with a bit of brake fluid...I didn't notice it dissolving or anything, but it shouldn't matter since the gasket is outside the fluid.

 

thanks that was the best fix so far.

 

We had a thread going on this over at the Mustang Corral forums. I think there may be a big problem with those brake fluid reservoirs that Ford is either unaware of, or has not thought about doing anything. It could mean a recall.

I had mine replaced under warranty, but other folks have adopted various fixes. One guy did what I was going to do initially but chickened out. He stuffed a rag in the opening, sanded down the top of the neck (that's why they leak, poorly molded surface there), and removed the rag with the sanding flakes. He says it did the trick.

 

Thanks racerx for your simple fix to the problem. I went to Home Depot and bought the gasket for .98 cents and installed it as you said. The cap fits tightly against the gasket and hopefully no more leak.

 

ditto thanks on the gasket fix. works great. Bet u could make some money on e-bay ..."2005 Mustang brake fluid leak fix"

 

An even tidier fix is found on the following thread:

http://forums.bradbarnett.net/showth...595#post738595

A mite cheaper, too!

 

http://forums.bradbarnett.net/showpo...8&postcount=11

 

I would think the first post is not the best way to fix the problem. With the gasket where you are showing it, it is actually pushing the rubber gasket thats in the cap away from the rim of the reservoir. Some one else posted that they got a gasket that fit between the rubber gasket and the cap. I think thats the best way to go.

 

Guys, I can tell you that my dealer replaced my whole reservoir under warranty, and it has been fine for a couple of months now. The problem is that the top surface of the filler neck on a lot of these things wasn't molded right. It's not flush. That's where the seal is supposed to be made.

I'm sure the washers and o-rings will do the job, but it is no biggie to get the leaking reservoir replaced for free by Ford. I'm thinking we'll hear about a recall soon.

 

Careful Leo:
http://forums.bradbarnett.net/showpo...3&postcount=24

Did you see my post from way back when?
I support some type of thin rubber between the cap and the bellows.

 

Got mine replaced too, along with the booster and they repainted the frame where the brake fluid ate the paint.

 

For all those that think that this is the worst way to fix the leak, that's fine, all I know is that it seems like an air tight seal and works for me and I haven't seen a drop come out yet.

 

Not the worst way, not the best way. Kind of messy when it is removed.
You have sealed it at a point that it was not meant to be sealed... but it works. Good enough.
It should be sealed at the top of the reservoir. If they could do it in 1966 why not 2006?