The typical used oil analysis (UOA) packages don't include a complete FTIR scan. Some UOA labs use FTIR to estimate oil properties such as fuel dilution and total antioxidant content using ASTM E2412. However, identifying the specific antioxidant peaks from one oil and comparing to a known...
KXAN did a follow-up investigation a few months later. Here is a link to the story:
http://kxan.com/2014/12/16/kxan-re-tests-failing-oil-change-shops/
All of the shops that failed the first time around were much more careful the second time around and the test results showed that the oil was...
I own the test lab that performed the analysis for KXAN. We don't do used oil analysis like Blackstone - we work only on new oils with the lubricant manufacturers. I can give you some additional background on how the testing was performed. It is correct that the typical used oil analysis won't...