Engine oil

Going back to the Z-Alt stuff, if they say their product isn't snake oil, does that really mean that it isn't? What makes you so sure that a quality engine oil needs supplementary additives? A good heavy duty engine oil already has all of the additives necessary to protect your engine.

There is more to an engine oil than just anti-wear additives. Dumping in a can of "not snake oil" might make you feel like you're doing something useful but how do you really know that you're not harming your engine in the long term?

Anyway, the Cross Bearing Friction Machine (Timken/Falex Lubricity Tester) Z-Alt uses in their demonstration video was designed to test the extreme pressure capabilities of gear oils not engine oils. See BITOG: Timken Machine Testing. Sure you get a result but is it relevant?

Why not use Royal Purple? They've got a Timken Machine video too and much better graphics.
http://video.google.com/videoplay?docid=1712299263246216338#

Or what about Roil? (No cool graphics).
http://www.youtube.com/watch?v=pPLlgzQvoiw

Why not use oils that perform well on the 4 ball wear test? Amsoil has great results but maybe this test isn't relevant to engine oil either (see Mobil FAQ).

Grassy: You won't find any answers with a search that produces too many results. You need to be just a bit more specific. The link I included in my earlier post is on page 1 of the Small Block Tech forum (this one) right now and is entitled Oil??. That's why I suggested that you didn't try very hard. The only way I can make this easier is if I click on the links for you.