well...since im a technician, i guess ill give my little tid bit sa well.
the problem does not necessarily stem from idiot's that are employed as 'oil monkeys'. (although they do get in there-ive seen em'!) the problem, the REAL issue is that the dealerships want EVERY LAST **** DIME THEY CAN GET!! I, personally, am SICK OF IT!!! they push, push and push you to get 'waiter' after 'waiter' done to get people in and out and then wrap it all up in a oil change cost of $8 to $15 and a list of "to-do" things such as brake flush, trans flush, butt flush...err.....scratch that last one...only a joke!
but seriously, the push us so hard to move quick that, even the experienced guys screw up once in a while. I can say that I too have actually started an engine w/ out oil and of course, instantly realised it and shut it off. Reason it happened was that I was pushed by now fewer than 3 people (i.e. being yelled at) to hurry up and get this customers car out of the simply because they were a WAITER! Ive also been given the wrong oil filter by parts and, my unfamiliarity w/ the product at the time caused me to not know that the filter was for a new version of this particular car and engine combination. Same car and engine, but the filter mounting is different. So, the filter literally blew off as i drove out the garage. Again, oil left the vehicle but all is well.
The point im making is that, anytime you take your car to ANY place other than your own driveway, you run the risk of the machinations of the various shops and the dire results. Its a simple equation really. Too many people in + not enough techs + restricted time + oil changes dont pay techs SQUAT! = high risk of screw up. Sorry for the bad news to most of you that think dealers are great or something-theyre not. soon as your warranty is over -NEVER GO BACK! use the oil you want also.