Oil seems to be a continuing topic on all motorcycle forums, regardless of make. I changed the break in oil on my 07 Classic at 500 miles as was recommended by Triumph. The Triumph dealership in Pensacola, FL where I bought it, was closed during Daytona Bike because the owner's son races there during that time. I needed to get it changed because I'd be riding to Bike Week too within a couple of days. I called the owner out at the track and he asked if I could do the first oil change and he'd do the rest of the service upon his return. He had one of his guys open up the shop to give me the required oil. When I dumped the break in oil it was dark black so I would never let it go over that.
I used 10-40 synthetic every 5000 miles in all heat ranges, from the Pacific Northwest into the Southwest during summer, until I passed the bike on to my son a couple of years ago. It had about 36K on it and still didn't use any oil. Even at 5000 mile changes the synthetic still looked pretty good and it never used any oil. If my memory serves me right the owners manual recommends either a semi-synthetic or full synthetic.
An interesting point I just found out with my Kawasaki Nomad is that Kawasaki recommends using regular oil for the first 20000, not to break the engine in but rather the transmission gears. This got me wondering if that would be worthwhile to also do on a Rocket but with a semi-synthetic rather than a full syn.
