We're glad you joined us. Welcome to the forum, and hope you enjoy your time with usthank u huck, I didnt expect such quick response. nice community!
You can just fill it up with a different flavor if you want. Sometimes the old flavors hangs around in your wicking though. So switching it up is up to you. I used to change flavors so often that my coils would turn into a jumbled up mess. Now I use different atomizers for different flavors. I'll switch flavors maybe once if at all before rewicking or changing the coil.Can I just add in the new juice (diff from old one), or do I need to add in a new coil everytime.
Also, how long does a coil last on average (assuming not chain vaping). And how would I know if I need to change the coil.