No, it's not too late. Go ahead and reseal the bolt, then torque to spec. Oil should'nt be getting to the intake manifold bolts. Could be a problem with the gasket under the intake and the oil is just finding it's way out at the bolt. If it's leaking that dirrection it could be going other places it should'nt as well. you should have this checked, it might be causing other damage that you won't see until it's to late. You could reseal and tighten the bolt, but that could just cover the problem up and force the oil out some place else.
You could have a loose or leaking freeze plug.
Intake manifold is leaking, or worse, cracked cylinder most likely tho, the intake manifold.
it could possibly have either a blown head gasket or intake manifold gaskets leaking
Intake manifold at top of engine?
Most likely the intake manifold gasket is leaking.
most time it is caused by intake gasket failure
Intake manifold gaskets are leaking, intake manifold is warped.
leaking gasket try tightening the bolts a little might help
Usually when you leak oil that's an indication that the intake manifold gaskets need to be replaced or your intake manifold is shot.
If it is leaking from a bad head gasket, it is because of a bad head gasket. If it is leaking from a bad intake manifold gasket, it is because of a bad intake manifold gasket.
If really on top then probably the intake manifold gasket ,study it closely .
First thing Is There Is No Water In An Altenater. ... But it Does sound Like the Heater Hose Is leaking and it is located Under The Intake Manifold on the 4.6 Engine And It is running Down Front Of moptor The Only Way to Repair This Is to Remove The Intake Manifold.....:)