I hope you drained the oil and put some wd40 in the sparkplug holes. Dont let it sit it could freeze up. I am sure others with more experience will give you exact info on what to do but start soon.
I don't think you mentioned previously that you had a v-drive. Some A4s have only one oil fill and the engine oil lubricates the transmission. Others have a separate fill back by the dipstick. If you've got that then yes, you do have separate oil supplies.I thought on a v-drive the transmission was lubricated independently of the engine??
What a pain in the butt - the ice is slowly melting with a heater in there in additionh to chipping away at it. Fingers crossed..