In the Honda, I’m not sure if the Pilot was affected by this but other J series Hondas certainly were - the variable cylinder management causes oil consumption and here’s why.
When the second cylinder bank “shuts off”, those cylinders cool down. This makes the piston rings contract, causing blow-by, and that is exacerbated by the fact that the heating and cooling of those combustion chambers and rings cause carbon buildup. The rings get stuck with carbon deposits, making it so that they can’t seal to the cylinder wall as well, also causing blow-by.
I have this issue with my car and a real like tribologist (oil scientist) that I know outside of this forum recommended I run a high PAO oil to free up the stuck rings. I have read on this forum that PAO has zero cleaning abilities as told by armchair quarterbacks, but this is what this oil professional told me, so I’m trying it via Mobil 1 EP 0W-20 which has around 60% PAO content going off of its Safety Data Sheet. It’s too soon to tell if it worked. Previous to this change I ran Platinum HM which seemed to help but did not stop the oil loss, although for some reason consumption went up initially before dropping again with the Pennzoil. I would high reccomend running full synthetic oils in these engines to help prevent further deposits at least. And now with all the HM varieties of full synthetics you can get those seal swellers with them if so inclined.
Also, if your spark plugs haven’t been done in awhile it may be a good indicator of this condition to replace them. I did mine on schedule and the plugs that came out of the rear cylinder bank were completely black and carbon fouled worse than I’ve ever seen before, while the other bank’s plugs looked like new.