.... Does anyone know why this happened? I have about $1,500 in rental car charges and a lease payment for the month that I didn't have it. My local dealer said he would pay for it but I'd like to see if ford will. I'm going to pick up the car today hopefully. Is there anything I should ask before I sign the paper and take the keys?
IMHO not enough info here to know what happened. Did you check the dipstick after the dealer oil change (IMHO that should be SOP before you leave the shop if you have anyone change your oil; you'd double check if you did the oil change yourself)? Do you know if any oil made its way into the cooling system? Some of the symptoms you describe sound like the car going into 'limp mode' due to overheating - in the 'excitement' of the moment you may have missed some of the dashboard warning messages.
Why do you care if you are made whole by "Ford" or "the dealer"?
If the problem was due to a dealer error (e.g. incomplete oil fill) they may be 'eating' the cost, not Ford.
Ask for a detailed explanation if you must know and be prepared to question for more details than they provide if that's what's needed for the explanation to sound credible to you.
Oh, and get that rent car payment covered before
you sign anything. If they do that, in most jurisdictions you've no claim for loss of use of your lease since they covered the rental 'substitute'.
Obviously something funky went wrong but the root cause may not have anything to do with a mechanical failure.
BTW, what engine is in your SE ?