Mini cooper coolant loss?

hmm if i believe you said the temp gauge was all the way up and it wasnt like that when you were driving the car...good job for pullin it in and turnin the car off..i think you will be fine but double check with a professional. make sure theres no leaks anywhere..on another note...btw if i were you i would use Full Synthetic motor oil runs a lot better than conventional oil. good luck with the car!