A lot of leaks will look like the rear main seal until you start investigating them. Rear corners of the intake, and rear valve cover gasket are good ones to check first.
Then jump to the front of the engine and look at the valve cover corner gaskets (I mean the head to intake interface), intake mainfold to engine block at the corners where all meet the head, front
oil plug by the filter adapter, the factory dipstick tube (in use or not and is it pluged) the filter adapter, timing chain cover, and balancer seal. All of these are high enough up on the block to run down to the
oil pan seal. WHen there it runs to the back of the motor, following the
oil pan and make it look like a rear main seal leak. It take several of them to get it to look this way or one really bad one.
Black light it and really find out where they are coming from. Although the rear main seal is the "Sailor Proff" it does work most of the time.