of work performed and it just states 'synthetic oil' IIRC (it's in the car which is at a dealer). They do say that Valvoline synthetic gear oil was put in and they involved Valvoline (they were kind enough to give me a copy of a fax) to try to figure out what happened.
But I think Valvoline will come back with 'yep - that's the correct and good oil' and then I'm screwed.