Just changing my spark plugs number 2 and 4 on the right hand bank are fine but the 6 plug has oil inside the hole where the spark plug! mabe an inch deep down inside have tryed using kitchen towel to remove some but should i go ahead and change the plug if there is still some left in it? seems to be coming from the cam cover area where there is a small 2mm gap between it and the plug hole why is this? should i be worried and not drive the car??? Help! lol