i use i think the real McCoy i think i forgot haven't had to change it
but its starting to go it still works but its all most time
and the thing about plugs is there are heat settings for 20% u want medum heat from the plug coil for less porformince hot for more the plug duratax gives is a hot plug but its cheap i use hot too but i need to get medum for and if i use 10% or 15% just some more info for ya air