I don't believe the lower control arm bushings have any oil in them (someone please correct me if I'm wrong) but they are replaceable yes. Does the oil look like green guacamole sauce? If so, you might be getting grease splatter from a torn CV boot.
Every morning a couple black spots are on the garage floor under the car directly below the right front lower conrol arm . I can touch it and see that it is oil. I can see into the bracket where the front of the right lower control arm is housed and I can see there is oil in there and oil dripping from the lower control bushing. I take a rag and clean all the oil out and the next morning there will be a drip on the floor. I looked all over and I can't see where anything can be splashing on to it. I appreciate you guys input.