I believe that one's got friction modifiers in it... which isn't good for motorcycles. The car 15w50 is from what I understand the only one without the energy-conserving biz and is said to be okay for bikes, or run the expensive MC-specific oil. Have a look to see if it contains any "energy conserving" marking on the front. I believe that my engine is worth a couple bucks more to ensure max protection and performance, but it's your call.
See this thread for more discussion, or visit this page on the Mobil 1 website to get some answers...
See this thread for more discussion, or visit this page on the Mobil 1 website to get some answers...