Shell Rotella Snythetic 5w40 oil in CB1100

[Ulvetanna_imp]

First of all I'm not trying to start another never ending oil thread. When I bought a Yamaha Star Warrior some years I joined the Star Warrior Forum and read about using Shell Rotella synthetic in the Warrior. Everyone seemed to agree it was a great oil for the Warrior. So I used it exclusively in the Warrior. Never had any problems or strange noises.

When I changed the break in oil on the CB1100, I had 4 qts of Suzuki 10w40 laying around and used them in the CB. I've only put about a thousand miles on it since, have had no weird noises, but read on this forum about the dangers of using 10w40 conventional oil. So I thought it prudent to put 10w30 in it.

I live in a rural area far from MC dealers and went online to order some 10w30 motorcycle oil. I discovered it isn't easy to find 10w30 motorcycle oils. Anyway I was wondering if anyone ran Shell 5w40 in their CB. If you do, do you hear those dreaded noises some guys talk about?

Having owned more than a few bikes in my time I've read quite a few oil threads and quite a lot of info about motorcycle oils. So I know 10w40 oill breaks down to 10w25 in about 1500 miles, and was just wondering what you guys thought about using Shell Rotella synthetic 5w40? It's made for diesel engines and is safe for wet clutches on motorcycles.

Walmart sells Shell Rotella and there is a Walmart ten miles from home. Any thoughts?

Why don't you just use the recommended oil? 10w40 is perfectly acceptable for most temperature ranges, the chart in the owner's manual shows this. Why use diesel engine oil? How could it somehow be better than the oil designed for the bike and specified in the documentation?

I have been using 10W40 oil - either Honda or an equal - nearly from the beginning. I ride the bike like a sportbike (which it is, according to Honda), shifting at 8000 RPM quite often. I just performed the 8K mile valve inspection and all the valves were exactly in specification.