Hey Condor, I have used synthetic oil in everything I own. I always used Mobil One because they where into it way before anybody else jumped on the wagon. All air cooled V twin bikes suffer from heat and brake down of the oil, and the rear cylinda gets the heat from the front one also so it needs all the help it can get. I used that as a example, for my studies I found out that it takes at least 400 degreeses before getting hot, where fossil oil boils at 212 or so. Synthetic oil never really breaks down, it just gets dirty from carbon. I think you would be more then safe if your engine needs 10w 30w, but use synthetic instead. My 2007 Camry used 0w 30w, what in the heck is 0w ? Take care Jim