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Typically, you would apply the anti-squeal product to the back of both pads (in- and out- board). It is a blue or red (depending upon the manufacturer) gunk that when it sets up, becomes a flexible, almost rubber-like adhesion between the sliding piston and its pad, and between the outboard part of the caliper and its pad. The fact that it is flexible keeps the squeal from happening (minimizes/eliminates the friction between the moving parts and the pads).
Now, a lot of car manufacturers (including Saab) use a copper grease-like substance (I think it is actually Copper Grease made by Permatex) instead of the anti-squeal stuff to aid in the elimination of brake squeal, as well as to keep all moving parts lubricated. Since the anti-seize stuff I have is also made by Permatex, but is made of silver (which is actually better for high-temp areas since it can withstand up to 1600 degrees Fareinheit), I thought I would use that in place of my usual practice of always applying anti-squeal solution. The reasons being that I hate the look of the anti-squeal stuff showing through the openings of the wheel if any of it gets squeezed when applying the brakes and oozes out the sides of the caliper assembly, as well as anti-seize lube is now used as oem for this purpose.
Anyway, it didn't work as I had expected. Either it's not the right stuff to have used, or I might not have used enough and need to put more on since my brakes are squealing like crazy now! The oem Saab pads that I replaced did have an area of rubberized material built into the back of them where the caliper parts contacted the pads, and the PBR pads did not have this. This could also be why I need something more, such as the anti-squeal stuff.
But, if you've never had a problem with brake squeal and are not having a problem now, don't worry about it. Leave it all as is.
Though, it is smart practice to apply some of the anti-seize lube to the moving and sliding parts of the brake assembly to keep everything working correctly and to help in disassemly when replacing the brakes. Just make sure never to let any of it get on the rotors or on the face of the pads.
Joe
posted by 12.111.48...
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