CompSyn,
As stated in my previous post I definitely agree with you, but a few minor points need to be clarified about Polaris.
1. Not every Polaris test method in place has been accredited via A2LA. The systems in place governing the company's laboratories have successfully met or exceeded conformance (as demonstrated via the registration audit and follow up process) to the criteria specified in ISO17025:2005.
2. The test package offered by Amsoil/Oil Analyzers is a unique hybrid test (due to inclusion of oxidation, nitration and TBN) that goes beyond contaminant screening and wear metal quantification at a ridiculously low price. Even buying in 10 packs doesn't get you to the convenient economy that you can get with single sample (non-postage included) kits bought via the Amsoil system.
3. I am now up to my 801st sample with one of their lab locations and can say that they don't skimp. You must ship the samples via a traceable method though!
I also wished that Amsoil would stop trying to convince the world that it has it's own oil analysis company...for goodness sake we all understand preferred provider and contracting relationships these days! In none of the literature I've read from OAI do they discuss the fact that they are ISO 17025 or A2LA (if I missed this please let me know) and that is a big miss! Having said that, however, I've found that several of the major oil companies (Chevron) do the same thing with their distributors.