Hello I think your refering to the NYCO oil which I understand is TCP free but has TIPPs and different toxins, yet I understand NYCO is working towards certification of a less toxic oil.
Meanwhile
Aviation Herald
“Incident: Delta A319 near Ft. Myers on Nov 19th 2023, smoky odour on board
By Simon Hradecky, created Tuesday, Nov 21st 2023 16:09Z, last updated Tuesday, Nov 21st 2023 16:09Z
A Delta Airlines Airbus A319-100, registration N341NB performing flight DL-1472 from Key West,FL to Atlanta,GA (USA), was enroute at FL320 about 20nm northeast of Fort Myers,FL (USA) when the crew decided to divert to Fort Myers reporting a smokey odour on board. The aircraft landed safely on Fort Myers' runway 06 about 15 minutes after leaving FL320.
The airline reported there was a smokey odour on board, the crew declared emergency and diverted to Fort Myers, where the aircraft was checked and released to service.
The aircraft was able to continue the flight after about 90 minutes on the ground and reached Atlanta with a delay of about 3 hours.
https://flightaware.com/live/flight/...929Z/KEYW/KATL”