I am aware that the 4.7's are notorious for the front main oil seal leaking. I have a slow leak and it doesn't leave any drops on the ground but it does leave oil residue on the harmonic balancer and the areas in that vicinity. I know there is a seal on the timing cover behind the harmonic balancer but is that the correct seal to change? My concerns are which seal would it be the front cover seal or is there another seal around the crankshaft that the timing cover has to be removed to access to fix my problem? I have looked at the service manual and it says to drain the coolant and not a word about draining the oil. Anyone have this issue or know what seal to change? Thanks.