On Fox5 earlier this year did an thing on shops changing the oil and not the oil filter.
They went to a dealership and marked the oil filter w/a black marker. After the chage was complete they went around the corner looked under the car to find the same filter.
They went to the dealership to find the filter to no avail. This happened to a few other shops sadly.
So even if you are confident about the dealership, unless you change it yourself, watch to see if the technician takes it off and puts on another on.
I've minded this closely since I bought the my car.
