I don't normally feel the need to explain myself but I will here since two members seem to disagree with my RTV recommendation. Here is why I do it and on any front seal, regardless of "what it's made of". There is no guarantee that the seal hole in the cover is perfectly round, just as there is no guarantee the seal is perfectly round. A light coat of RTV on the outside of the seal will assure the gap between the seal and timing cover is filled and sealed. Leave it off. I don't care. My front seal does not leak.
