How do you apply the oil to the grill? I was pouring some oil onto an old tea towel and then rubbing the grill with that - mainly the tea towel caught fire...
This will save your hands instead of trying to oil the grill rack when over the coals as the oil isn’t dripping onto the coals, flames flaring and the cloth burning.
Once up to temp clean the grill with a metal brush. Then oil and let it burn on to form a carbon non stick layer.