Amsoil's failure to get an API rating for a specific product is not an economic issue.

I am familiar with several of the independent blenders listed on csimo's post.

Most don't realize that base stocks come from only a handfull of suppliers, PAO's come from even a smaller pool of source. The same is true for additives.

Any independent can buy both and blend a lubricant, this is exactly what some of the companies in csimo's post have done. This is called "Private Labeling".

Regardless of size of the blender, quality standard is what is required to meet an API rating. This isn't a one sample certification. Many companies fail initially because they can't meet the standard consistently.

It is possible that this is why Amsoil doesn't have a API rating, also possible this is why API won't difinitively say whether they have tested, and this is why I won't use Amway Oil. I am concerned with the consistency of the blending and packaging process.