Quoted from pinlink:Questions about oil.
Is it ok to leave it screwed into the battery while not using it? Did this cause a loss of oil at all?
When are you finished with a cartridge? When there is absolutely nothing left? When it gets to the holes?
I'm new to the oil game, but digging it so far.
It’s fine to leave the cart on the battery, just be careful not to drop it and I don’t recommend sticking it in your pocket. I’ve broke one that way, and also your pen battery can get pressed by accident if it’s in your pocket and overheat. Hush pens are awesome, they come with a magnetic adapter which screws onto any 510 thread cart. The magnet holds the cart into the pen so it can’t fall out.
I usually keep puffing away until either nothing else comes out or it starts tasting like shit lol.