Maint question

I picked up my srt off today from an oil and tranny fluid change and on the recipt it showed castrol instead of mobil. I told the guy this morning to use mobil 1 (thats what the book says to use) so im having to leave work early on monday to get it fixed. :flame: Will this harm my engine??Also with the tranny fluid change is the friction modifier listed on the recipt??Mine just shows manuel trans fluid change complete. Am i to assume they did it right