There is some good advantages to additives but very few. It's the fact that oil chemistries are a science and many hours and lots of $$$ goes into blending oil and to think that additive makers can come out with something that works in improving the quality of an oil without disturbing the existing oil's chemistry is definatly not thinking ahead very well. Top that with the improper balance and adding more than stated by the oil additive instructions, just produces more problems.