If you had to choose between Harley syn3, Harley Dino 360 or Mobil 1 AUTOMOTIVE oil for a 05 Twin Cam what would it be ? I have been using Mobil 1 V-Twin but it is no longer available locally, go figure. I recently read a test result at the Motorcycle Consumer News website. They tested all the above oils plus Mobil 1 V-Twin. The V-Twin tested marginally better than the Mobil 1 automotive oil. That's because it is a 20w-50 as opposed to a 15w-50 The interesting thing is that the Mobil 1 automotive tested superior to both Harley oils. Any suggestions will be welcome.