I'm sorry to say, I've gone into Lithia Subaru Reno with my 5 qts of Mobil1 for them to use - and I tell them EXACTLY what I want done - and it's happened that I go to pick up the car and find the Mobil1 container still in the car!
Had to have them do a re-do. :-(
(Sometimes the service guys don't seem to listen, and I think it's because I'm female
).