Is is not a wonderful thing to share some real information to people?
The internet is a wonderful tool, it makes information available at one's finger tips.
However---what is behind the information? What is the reason of the poster to provide their information, etc?
What Kevin Brown posted, shared, with all, is so "on the money", it is awesome!
He has "nothing to gain" from what he took a lot of time to research, to present, and for what? Nothing really.
The "PROBLEM" is "what is real and what is just someone's "agenda" or "let me feed my ego", or "let's see if I create a "trust me, for I know, cause I did it a couple of times", or worse, "go buy this because I told you it is what solves your problem!", thing.
Kevin did NOT DO that, he shared "real and factual" information with all.
The vehicle manufacturers do make mistakes on several issues, however, due to their requirements to meet the laws, the fulfillment of warranty satisfaction, they must do what is right.
If they did not do such, they are subject to huge fines, big dollars to pay out and that does not make the share holders very happy.
So, they look about the world, they find products, systems, processes that resolve their "concerns", and then after much money spent, to "prove out" that which they find, to fulfill the expectations of the majority of their vehicle's owners expectations, they publish or require certain products and processes to correct the concern/issue.
Nissan/Infiniti did this many years ago, and they did not just "jump" into deciding which way to progress.
The use of whatever term one's wishes to use, Dual Action, etc, was not chosen by the agenda of one or two or even 100 people, it was tested and "proven out" (engineers prove out everything in their area of expetise)
So----what is this post on this thread about?
Simple, each car enthusist who wants to do the best for their vehicle, because they are passionate about it, should consider "each source" of "information", such as who it comes from, where does their expertise come from, are they promoting a personal agenda or is the information they are sharing is tainted by financial gains, does it really come from what the manufacturer of "your", or any vehicle, has tested, approved and uses to resolve concerns.
Some areas of correction require just the use of a dual action, others require a rotary, some require both etc.
There are those situations and such that require that the job be one that is just enough to "get the vehicle over the curb in the real world".
Those kinds of situations are not ones that the enthusists detailer may be able to relate to, since they fail to understand that over 35,000,000+ (that is 35 million) vehicles are produced and sold around the world each year.
Now consider the number of "used vehicles" which people need to have to go to work, etc, and that number grows big time.
For the true "professional detailer" who lives and dies by having customers who will pay to take care of their cars, that number is very important.
Think about this long post, please, before you spend your hard earned dollars on some "flavor of the month" product to resolve some issue you may have no knowledge about.
I do not wish to be the one to receive responses from those who don't take a minute and think about what I posted and "I will not take time to "defend" what I just posted", for this long winded post is the result of over 50 years of being a gearhead, who has made a ton of money (lost most of it due to bad personal decisions) in those years.
Just a rant, however, very well intended to be of value to all the great people who visit/post on this great forum.
Grumpy