When I called Raybestos and asked them to email me a Material Safety Data Sheet (MSDS) for their product, I found that the MSDS says: PRODUCT ID: CHEMPLEX 839. PRODUCT MANUFACTURER: FUCHS LUBRICANTS CO. Same product and manufacturer as Delco's AC Silicone Brake Lubricant. Then I bought Raybestos and yes it's the same as AC Delco but at a much better price. FUCHS CHEMPLEX 839 Silicone Brake Lubricant is the only right way. No other product required, use it for all your brake lubrication needs.