It's easy to pass off any fraud with "buyer beware", but the reality is that most people have information gaps in areas that are not of interest or priority. People have a tendency to trust others, especially in fields where we have little knowledge. So when the bottle label says the oil provides "excellent protection against engine wear, sludge, and rust", and has words like "Gold Plus" and "the best", most accept this. Even on BITOG, people frequently discuss and accept product claims and data without any verification. That's just human nature, and I don't hold it against them.
Scam artists exist because humans are not perfect, and they exploit these imperfections for profit. I agree people should be more knowledgeable on more subjects, but they are not. People buy these oils because of price, convenience, or claims, and trust that the manufacturer is honest. We do the same every day as we eat foods prepared in restaurants, or buy commodities from Walmart.
The problem isn't the consumer, and neither is the solution. The problem is the exploiter, and the solution is exposure and prosecution.
Tom NJ