I think the issue might be that Honda engineers who designed the maintenance minder didn't realize how tough on the oil the J35 engines especially with VCM can be with extremely high temperatures in certain parts of the engine. Also the Honda owner's manuals recommend conventional oil, and for people who follow their owners manual's recommendation of conventional oil + the maintenance minder with OCI around 6k to 7.5k miles, with these hard on the oil engines, it could explain why these engines end up with sludge / varnish.