I understand there is a bladder inside the gasoline tank. If this is true, are there certain gasoline additives that should never be added to the gasoline tank because they could damage the bladder? I like to use certain products such as combustion chamber deposit removers and fuel injector cleaners and even things like Marvel Mystery oil. Are my tinkering days over? Also, would gasahol lower the life expectancy of the bladder or other fuel system components?