TL*THE CONTACT OWNS A 2006 HARLEY DAVIDSON XL883R. WHILE DRIVING 70 MPH, THE CONTACT NOTICED SMOKE COMING FROM THE ENGINE. THE DEALER STATED THAT THE TYPE OF FUEL HE USED CAUSED THE SMOKE. THE ENGINE SIZE, PURCHASE DATE, AND # OF CYLINDERS WERE UNAVAILABLE. THE CURRENT AND FAILURE MILEAGES WERE 1,600.