No reason to be confused.

AMSOIL doesn't spend the money necessary to get on the various approval lists put forth by manufacturers and standards agencies.

Here's my favorite quote about AMSOIL

"To me it seems to be a good oil sold by snake oil salesmen."

-- Posted by Charlie in Texas ( Amsoil... best oil made or snake oil? )

I've used some of their products, but I've been turned off by the weirdness of the reps selling it.