I also have to wonder how many people are doing these crazy long extended oil changes on these cars? I know a lot of people think you can buy a brand new car and have no idea that oil has to be changed until something goes wrong.
My wife has a 2018 Fit...I told her she is going to need to wring it out at least once or twice a week. I tried explaining that the valves can get build up and high air velocities are about the only thing we can do to slow down and or stop build up.
Its a CVT so holding high RPMS are very easy, its just pretty effing quick and quickly surpasses any speed limit in a hurry.
I plan to install a Radium Engineering catch can when I go to do the first OCI and service. It worked very well on her last car. I hope it will help slow down any build up from oil vapors.
*Anecdote*
My wife has driven her T-GDi Santa Fe Sport 2.0T in ECO Mode since day one. It's never seen WOT and she drives in miserable rush our traffic - for 6 years and 110K miles. Again, zero drivability issues.