I’ve noticed the poor/shortsighted advice lately, as well. And the reason I was able to pick up on it, despite my relative inexperience, is because of the hours I spent reading older threads.
Also, when I first started looking into adding power washing to my business, I would search for some topics here and on other forums. But a great deal of my learning came from simply browsing through the subforums that applied to me. I ran across a ton of useful and important info that I probably wouldn’t have found had I only searched for the topics as I thought of them.
I have a home that a professional house pressure washer used some type of oil on my home. I wish I could find this again. It makes the vinyl protected from the cleaning chemicals. NICE TOUCH in my opinion. You just don’t want to over use it.