Shouldn't be any oil in it, ultimately it's just a set of coils of wire for each spark plug and some electronic circuitry to control it all.Do they have any type of oil in them? The reason I ask is that when I changed the plugs the last time the plug that is closer to the driver side had a little oil around the top side of the plug. But the oil was really clean. So that is why I am asking.
Also how do you clean the points that go on top of each plug?