Honda does have an updated calibration for the 1.5T to reduce fuel dilution. But it’s not a Honda issue exclusively - GDI has enabled small turbo engines to run on regular - spraying fuel directly provides a small “intercooling” effect but it’s not “lean”. But more fuel has to be sprayed.Been using this in my CRV'S for some time, with the oil dilution, it's usually below grade in 2500 miles or so. Not so good. Switching to Mobil1 0W-30 AFE to see if it will run a bit longer. Some of these 1.5t engines are real diluters.
That’s a reason why GM was pushing for premium to be the new standard.