We here at Grand Rapids E-liquid have found the easiest way for us to prime our coils is to let them bathe the coil in juice. Step 1.) Have coil still in factory packing. Step 2.) Poke a hole in the foil of the coil packaging Step 3.) Let coil sit in juice filled packaging for 4-5 minutes so the coil can absorb the juice. After the recommend time of the coil sitting inside the package its time to put the coil in and fill your tank with The Best Vape Juice of 2018!