I have been using honda synthetic oil since I bought my bike (03 1800 R) , and after checking out the thread with the tests on all the different oil brands. I think I am ready to make the change to either Amsoil, hard to find but it is around, or Mobil 1. I went to a few different auto part stores, and then to Wally World. And I could not find any 10w 40 full synthetic oil anywhere. Is there a reason that I can't seem to find it anywhere. Or am I just being NUMB ????? Need a little help.