Challenger- I tried greasing the slides the calipers ride on and that made the situation worse. Here we have roads that are made up of shell rock (like coral) and sand and this mixture would cement the calipers to the slides. I polished the slides with a high speed pad and emory cloth and greased the slide pins good. With this combo on my 4 diff dodges I have increased the pad life 400 % to 40,000 miles. 
