Hello everyone,,
Recently there was a discussion about various rust removal products such as P B blaster, WD-40 etc. Also included was acetone+ATF mix.

I must move a DS21 with brake pads rusted to the rotors, which is why I was given the car.
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Bottom line: I did an experiment in which I soaked one side with PB blaster, the other with acetone+ATF. I'm doing this every day for three days, then attempting the move. I'll try a basic push on the car each day to see if anything is now free. This way we'll know how many days it took each type of material to work.

Not a perfect experiment but it should tell us something.

Will keep everyone posted after day 2.

Just for clarification. None of the products mentioned are for "rust removal". They are penetrants and lubricants. They won't remove rust per se but they will allow you to separate the bond formed by corrosion/oxidation. To speed up the release of the parts use vibration. The occasional light "rap" with a small ball peen or impact hammer will help.

The calipers might be frozen into place which will prevent you from moving the car. If so, then no amount of soaking the caliper mountings or pad surfaces is going to help. You'll need to either remove the calipers or get them to depress.

__________________
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If it is that bad.... remove the caliper and disc on both sides. purchase new fully loaded calipers and discs. Good brakes for the life of the car. not that expensive. flush all the brake fluids first.