Hey this is about 3 years late but I would recommend getting some compressed air, either in a can or an air compressor and and some "Electronic Cleaner" for cars. Go to the parts store and get a can of CRC Electronic Cleaner, its easy on electronic parts and doesnt harm most plastics. Spray into you speakers and flood out most of the oil and then spray the air into the speakers without using too much pressure. 91% rubbing alcohol works also but can damage plastic. Hope this helps someone else.