This is a Jay Leno interview with a Torco Rep.
It discusses what is wrong with modern day motor oil products, and how you can address the wear and tear issues occurring in both older car engines.....and newer car engines to stop or reduce wear due to the lack of anti-wear additives due to modern day car emission control systems that don't allow the use certain anti-wear additives of yesteryear that once protected our engines.
This interview implies that colloids shown in the second product are needed to replace those lost additives. Modern day colloids are better than zinc ever was, by reducing more friction....zinc just cost more! Zinc is what's discussed in the first product.
Colloids also stop those dry damaging cold starts that zinc couldn't even stop back in the day... as would be in the second product.