BUMP
I have been running the new Rotella T4 (CK version of now retired Rotella T triple protection) in my 2003 Honda CBR600RR for a few oil changes in a row now, and I am digging this oil. Bike runs smoothly and the clutch grabs strong, which is to be expected from Rotella T dino oil. I have heard mixed results from the synthetic T6. Unless you are somewhere it gets cold I would stick with the thicker 15-40 of T4. Also, T4 is cheap! [censored], at $14 a gallon I go ahead and change it every 2k miles or so.
Anyway, if you liked Rotella T3 aka Triple Protection, you will love the new and improved T4!