Avoid contact with brake fluid, water, soap, thinners, abrasives, etc... This plating becomes tougher with age, but is very vulnerable when fresh. Certain fluids and abrasives, including wax, may remove the gold coating. When your booster needs wiping off, use a towel, slightly water dampen, to accomplish this. Spraying a clear coat on will neutralize the red and green colors in the plating. If in doubt, call or e-mail me first.
Keep clean with moist cloth. Wipe off any foreign liquids. These parts may be clear coated, if desired.
This plating should be kept clean and dry. There should be a light coat of oil on all surfaces. Lube hinge pivots with a suitable grease prior to installation.