I can see why people keep talking about Auto-RX here-many people have had positive results. Being fair and balanced, some people have not had positive results. If there is a product that a lot of people believe in, they are going to keep talking about it.
Nobody has to use Auto-RX. If you do reasonable OCIs and use good quality motor oil and good quality oil filters you could probably drive a car or truck hundreds of thousands of miles with no major problems. Some people say that Redline oil has cleaning properties so a person could use Redline maybe to keep their engine clean-although Redline is expensive.
Personally myself I owned a Saturn car that had a seal leak and was leaking a small amount of oil. I tried Valvoline MaxLife which is supposed to have seal conditioners in it- no stopping of the leak. I tried CD2 stop leak-no result. Then I tried Auto-RX and after I did 1 or 2 cleanings the seal leak stopped. I can't prove that Auto-RX stopped the leak but the leak stopped after I did the Auto-RX cleaning.
Most people seem to have positive results after using Auto-RX. To be fair some have negative results. Terry, the oil analyist guy, tested Auto-RX and said that it works.
You have to realize that Auto-RX is not always going to work. If a seal is damaged and not just covered with sludge Auto-RX will not repair damage to the seal. And if an engine is simply too sludged up nothing is probably going to help unless the engine is taken apart and cleaned/and or rebuilt.
I can't see somebody complaining about people at this website discussing a product that seems to work. What is the major point behind this website anyway? People discuss motor oil, lubrication subjects, oil filters, additives, etc., at this website. If a lot of people at this website had discovered a motor oil that was just fantastic (let us call it Brand X), people would discuss this Brand X motor oil endlessly at this website. If people discovered some oil additive that really did seem to greatly reduce friction and greatly improve fuel economy that oil additive would be discussed endlesly here. That is what people do at this website-discuss motor oils, oil filters, additives, lubrication subjects, etc.