I have a 2017 RC 350 FSport with 20k miles. Great engine with high performance from eco to sport plus settings. Having the injector cleaning done and will see if I see any change in performance and gas mileage. I keep cars for a long time (Had a Lexus GS300 for 15 years with 150k miles and never had a single problem). Regardless of opinions, I can afford to have it done and it’s worth peace of mind.