I agree, nothing wrong with adding it at all. By all means, everyone should do what they feel is right for them and their equipment. I'm just saying that myself and a lot of others run the cool power without adding anything and have had excellent luck. It all boils down to what you personally think is best for your situation based on your own personal experience.

You might be on to something with the climate and rust thing. I've bought used engines on line from really humid areas of the country and a few of them looked like they were pulled up off of a shipwreck on the inside. You see that on occasion around here but it is generally only on very old engines, engines that got crashed into a pond, mistreated engines, etc. when it's 102 in the summer with 15-20% humidity corrosion generally isn't a factor.