Had a discussion with my sister on extras a service dept tried to sell her. Included was an engine carbon cleaning, on a 2019 port injected Jeep with less than 20,000 miles.There are dozens of opportunities to hear about TT fuel … written articles, owners manuals, magazines, TV programs, auto club, YouTube etc … Sure, many are not aware but in some places it’s hard to not get TT, know it or not.
Where I live we have Exxon, Shell, P66, Chevron, Citgo, Sunoco, and Valero … all good !
Got into where she fuels and top tier gasoline benefits etc.
Basically clueless on this. And she was head of infectious control at a hospital before retiring recently.
As was my brother, included in same conversation.