I usually do my own brake jobs, and I always use the factory shims along with the brake goo (red or blue) grease to prevent squeaking. Nissan used to employ "anti-rattling" springs on their brake pads, although that has been discontinued. I did not notice any dried up goo on the Murano's pad backings, so my guess is the setup relies on the factory shims alone to prevent noise. Apparently it does not work!eager said:Someone correct me if I am wrong but brake squeak noises are caused by vibration of the pad between the disk and the cylinder. Permatex and few other companies make spray on mastic which I always used to spray on the back of my new brakes pads before assembly. I have never had any squeaky brakes after using this method but I notice most auto manufacturers tend to use plastic shims and springs to accomplish the same ends.
Any comments from the master mechanics in the forum ?