I was getting an oil change at honda in november (before i put my car away for winter) and i was underneath it with checking out things for myself, all is good and generally rust free like i hoped except for a cracked tie rod and a little oil leak. He told it was the rear main seal. He told me i didn't really need to worry about it unless i was losing alot of oil. Well I'm really not losing anything noticeable at all. I was reading up on how you would go about replacing it. Do you really have to yank out the whole engine? Or couldn't you just drop the tranny? Is it serious if it goes? I don't really have the know how or equipment to do something this big myself and Honda is the the only place i trust.