[kathyricks]

Here's a photo of what a Toyota engine looks like inside after running on dino oil since Sept. 1973. Practically showroom clean inside except for a light golden (and harmless) coating of varnish. Also free of significant wear since cylinder compression is like new.

There's little profit in dino oils so that's why there aren't any websites on the internet that educate the public about how well dino oils can prevent wear and keep engines and other drivetrain components clean for many, many decades.