Noticed Redline updated motor oil safety data sheets as of June 2022 and showed 50-70 percent PAO content… Mentioned POE as being inherently Biodegradable under that section.
https://w3apps.phillips66.com/NetMS...anguage=EN&IssueDate=6/20/2022&SubFormat=USDS
https://w3apps.phillips66.com/NetMS...anguage=EN&IssueDate=6/20/2022&SubFormat=USDS