From what I have been told the only bar that actually has JEWELERS POLISHING ROUGE in it is the red bar. I polish my primary cover, after the appropriate grades of wet dry paper down to the finest grit, so there are no scratches from previous grits, then use the red bar. Most guys think the pressure you use from the stitched buffing wheel is what polishes it, it is not, it is the red stick compound, with the jewelers rouge in it, with light pressure, just takes longer, that does the polishing, and not hard pressure, you have to let the rouge do its job, pushing too hard just turns the metal black, ( as in burnt on to the metal) Autosol is a nice product for final shine, if you read the label on BRASSO it says do not use on aluminum, but I have had good results with this for many years, also Eagle One polish used to have pumice in it and worked well, not sure if still has pumice, everything now is clear coat safe, (which translates too no abrasives at all)