I’ve seen some UOAs posted here showing dilution in these engines, and also no unusual wear, so I’m not buying this slow death theory either. Obviously whatever the 0w-20 dilutes to is still more than capable of protecting the engine. The more and more I read the more it sounds like there are companies who are happy to sell you guys snake oil to fix non existent problems you have invented using BS data “I mean, you don’t want fuel in your oil do you?”, and people here are eager to shill for those companies because they drank the kool aid by the bucket
If thicker oil protects better, and Honda has an agenda, then don’t listen to the manual and stop at 5w-30, go full on 15w-40 because thicker is better, and of course you know best