3 months is a little bit long. Depending on the juice I use, I might get up to 120ml out of my tanks. But the last few puffs are quite borderline.Wow i absolutely did not know all of this i actually thought that coil replacement and wicking is suppose to occur once every three months.. amazing thank you all so much for the valuable info.
If you rewick, glow out your coils and dunk them in cold water while still hot, and they'll come out just as if they were new. But I'd suggest to switch over to kanthal instead of using SS, because of its superior longevity and its lack of causing toxic fumes when dryburning.
At 40W you don't need SS anyway.