If dealers were the only ones allowed to do maintenance under warranty, nobody would ever be able to get warranty work done because they would be so busy filling wiper fluids and rotating tires all day long.
Change your own oil. You can use higher quality fluids and ensure that the work is done properly without having some grease monkey messing up your seating position or using an air tool to overtighten your drain plug.
Or leaving on the old seal from the previous oil filter.
Or leaving the oil filler cap off.
Or forgetting the drain plug completely.
There are plenty of nightmare stories about dealership oil changes.
2011 SES 5spd #006 >> SR #213
What other people think of me is none of my business.