Here we have a pair of VW Audi brake calipers purchased as a pair from Ebay.
First the caliper was degreased in Rustbuster Safer degreaser, then any loose heavy rust was wire brushed from the surface.
A solution of Safer Rust Remover was made up from a one litre bottle of concentrate and 4 litres of warm water. The Caliper was dropped into the solution completely assembled including all of the washers and rubbers.
Visit the Rustbuster Ltd website for more information on A5 SAFER RUST REMOVER CASE HISTORY BRAKE CALIPERS