I spent tons of cash on new device and that coil. PnP, G coils, T18 coils,s coils,and jem coils most burn out less than 2 days. I do correct advice they say prime coil, yeah yeah,.don't overfill so I 90% fill tank. Let soak coil 10 minutes. Actually I do 2 hours. Small inhales whilst not on do that for an hour. Then small inhales whilst on. I do this on every coils and most they burn out <2 days. Some admitted last 3-8 days. A year ago I got so fed up I bought logic compact and prefilled pods. They're ok but you don't get satisfaction with the hit even off nic salts. Back on normal vapers and back on burnt coils again. Sorry it's cheaper to smoke roll ups.