How do add clutch fluid to a 2003 ford mustang

SOURCE: 2003 ford mustang ac clutch

Ten thousdandenths .0010".

SOURCE: A diagram of a 2003 Ford Mustang interior fuse box?

here you go
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

SOURCE: i have a 2003 ford mustang gt stick shift. clutch sliping

Make sure your master cylinder and slave cylinder are operating. If the clutch hasn't been replaced in a while (or you have been especially hard on the clutch) it could just be worn out.

SOURCE: refill gear oil in rear differential on 2003 ford mustang gt

The differential will have a plug in the driver's side of the housing that is removed with a 3/8" drive ratchet or square drive. Be sure you know what type of fluid is recommended for your vehicle. It will depend on whether it is a locking differential or standard.

SOURCE: 2000 ford Mustang clutch

Before attempting any work on your car go and get a Chiltons or Haynes manual (from your local auto parts store) for your year/make/model. It will cover several years and models, but has detailed instructions with photos on how to do just about anything you need to do. Secondly, I suggest you get a buddy to help you. The tranny is heavy in your car, and if not done correctly could put you in the hospital should it land on your head. Replacing the actual clutch really isn't that hard in a Mustang. Its getting the transmission out and back in (probably while the car is on jack stands) that can be hard.