Welcome › Forums › Ford Tool Questions › Tools 3Z,5Z, and 15Z This topic has 0 replies, 1 voice, and was last updated 5 years, 4 months ago by sponge19501924@yahoo.com. Viewing 1 post (of 1 total) Author Posts January 24, 2018 at 3:55 pm #212 sponge19501924@yahoo.comKeymaster What is the significance of tools marked 3Z, 5Z, and 15Z? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In Log in / Register Tools 3Z,5Z, and 15Z →