I just changed the back brakes on my 1998 C230 for the first time with Pagid pads and now they squeak, although scream is a better word for it. I re-installed them and really cleaned everything, put greese on the sides of the pads and anti-sieze (copper colored) on the back but they still squeek.

Any ideas how to stop the squeeking? I've used this technique before successfully, but it didn't work this time. I'd be up for even buying new pads.

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5 speed '91 190E 2.6 320,000 mi. (new car, fast, smooth as silk six, couldn't find any more Peugeots)
5 speed '85 Peugeot 505 2.5l Turbo Diesel 266,000 mi. (old car, fast for a diesel, had 2 others)
5 speed '01 Jetta V6 (new wifes car, pretty quick)
5 speed '85 Peugeot 505 2.2l Turbo Gas 197,000 mi. (wifes car, faster, sadly gone just short of 200k )
5 speed '83 Yamaha 750 Maxim 14,000 mi. (fastest)
0 speed 4' x 8' 1800 lb Harbor Freight utility trailer (only as fast as what's pulling it)