my g has 30 k and has been dealer serviced for its entire life..... People say that once you put reg oil in it and change to syn it is not good! any comments or feedback? I need to change me oil and am not taking it to the dealer again, bunch of a-holes workin at infiniti! thanks!

 

^ anyone saying this does not know what they are talking about. You can switch to one or the other without a problem. Synthetic oils are known to have superior resistance to breakdown.