Here's some shots of my 07 Odyssey oil fill hole showing the internals. Mileage =52423. Just made the change to Pennzoil Ultra (5W-20). Still looks as clean as day one when I bought it new. 5K on dino, then been running mostly pp 5W-20 except ofr one 5k run on Castrol Syntec, and one on Valvoline Synpower.