Hello everyone...Does CataClean or Risoline Cat Cleaner or Duralube, actually do what it's advertised to do...Or can it do more Harm...I replaced the cat along w both o2 sensors. I Don't really believe in 'Mechanics in a Bottle' But just wondering if this would be a good preventative measure as long as it will not cause any damage. (Scotty Kilmer says Laquer Thinner)???...Thx for any input....Vince