when i inject air back into oil when i am like drawing but trying to seal the syringe and create a better vacuum there is a spider web like formation of air bubbles, sometimes they stay for a while if it's cold.
but not forever. so def heat it and see.
if not you can hit up GPZservices and use new vials and a filter, bake the gear first and then filter it into a new vial and it will be safe. but if its shittily sterilized/filtered gear gotta wonder what the quality of raws is like lol
