I use this oil and have spent months researching why I should keep paying a fortune for it. Turns out Phosphorus levels play a gigantic role in the oils ability to help resist wear. These are links from Mobil 1's website with..........finally..........some data. As you'll see in the 3 page table Mobile 1 oils are NOT all the same. I've read many posts that say Mobil 1 uses the same additive levels throughout their entire line. Well this speaks for itself. Don't think this has anything to do with the immediate performance of my bike, but certainly will help keep my engine together over the long haul. Ultimately, to each his own, just thought I would share.