I know...another oil discussion. You can easily go from semi syth. to full synth. no problem. In higher mileage engine it isn't a good idea to go from non synth. to synth. because of the way the 2 handle dirt and varnish differently.

Amsoil 20-50 motorcycle oil is the best from every study I have seen with the Mobil 4t from Triumph running a very close 2nd(aslo available under a dif. designation at an auto parts store)

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!