I Have Heard Some Real Good Reports On This Stuff. I Bought A Can Of It For My Boat. Not Put It In Yet. I Run A 1999 Yamaha Vmax 3.1 Fuel Injected. Was Using Ring Free But It Is 16 Dollars A Bottle At The Closest Dealer To Me. The Sea Foam Says It Is Oxygen Sensor Safe And Removes Carbon Deposits. Any Feedback Will Be Helpful.