It is extremely unlikely that at anytime in the future a single individual here or a group are going to pay whatever it would cost (surely at least $100.000.00 or perhaps $1,000,000.00) to fund some sort of official lab test of some supplement. So we might as well forget about all of that.
I believe in being skeptical about supplements. I usually would not try something unless there was some evidence of a product possibly working or a very large number of guys here stating that they had had positive results with something. For example, one of the reasons I was willing to try Tufoil was because of a positive article in Popular Mechanics Magazine.
The Oil Additives section would have extremely few posts if in order to post people had to supply lab evidence that a supplement they were using actually worked.
If somebody is able to supply some sort of evidence, such as before and after photographs of the interior of an engine, I am willing to look at something like that. Other possible evidence can be things like compression testing, careful monitoring of fuel economy, and so forth.
But I fail to see what is wrong with somebody being allowed here to post that they had positive (or negative) experience with some oil supplement. Don't we want to find out about supplements in this section? Can we not benefit from somebody else's experience? What is the purpose of this Oil Additives section?
For that matter, anybody who decides to use Amsoil, or Redline, or Royal Purple, or any other such product has to depend on what the manufacturers of those products are stating as to the effectiveness of their products. I don't see Valvoline, or Pennzoil, or anybody else releasing secret lab testing that they keep to themselves. If there was a problem with some brand of motor oil, it would surely quickly become apparent. But people here surely would be allowed to discuss any such issues with a brand of motor oil, right? Or would they have to keep quiet about their engine being ruined until after official lab results had been released?