nothing will bring them back to as new condition as the contaminant sits deep down in the pads and as they heat up it gets sucked up to the surface reducing the grip again and again.
when using any solvent as a cleaner it is best to use an alcohol based solvent rather than a mineral based one due to the residue that is left behind.
Meths is good. a tip is put some of the solvent on a rag and then wipe a window and look at what is left.
light contamination can at times be removed with a solvent and the brakes work as well as before BUT if the brakes have been used contaninated i would not even both trying to fix them.
when using any solvent as a cleaner it is best to use an alcohol based solvent rather than a mineral based one due to the residue that is left behind.
Meths is good. a tip is put some of the solvent on a rag and then wipe a window and look at what is left.
light contamination can at times be removed with a solvent and the brakes work as well as before BUT if the brakes have been used contaninated i would not even both trying to fix them.