My girl has been on me about this stuff called Superzilla, a penetrating fluid, lubricant and cleaner. I have always said that AeroKroil penetrant is the best and used it for years. I have seen AeroKroil crawl up threads-literally from the bottom and move upward against gravity. I saw a Superzilla commercial that shows it doing the same thing. So.....who has tried the Superzilla stuff and can compare them here?