Hello , Does anybody out there have any experience using lubro moly engine additives or any other one of their many products ? Up to this point I have used the ventil sauber ( valve cleaner ) and their jectron fuel injector cleaner. I've also used their mos engine treatment that you add to your oil. I like these items ,and I think they are high quality. What I would like to know is if anyone has tried their motor treatment and their motor cleaner which are more expensive . The motor cleaner is supposed to remove all the sludge from the oil galleries and get the engine very clean for a fresh oil change. Would this be a safe product to use in an older car ( 1991 240) . Can these cleaners eat away at the engine seals and cause leaks. Can I trust this motor clean being that it is a lubro moly item? I would appreciate all replies. Thanks,rf64.