Getting ready to do my first oil change. Sent my wife to the local Honda dealer to pick me up some Honda GN4 10-30 oil. She came back with Honda fully synthetic HP4S 4 stroke Motorcycle oil. She said they didn't have the gn4 10-30 on hand but the parts guy recommended the synthetic and that's what I should use. I'm sure I can use this oil it is a JASCO T 903 oil but at $47.21 for 4 quarts its spendy. I can see an advantage of the synthetic living in MN. with the Extreme temp ranges that we have I could run it year round. How about a poll? What oils are Members using?