I have a 2010 vulcan voyager, with 27000km on it. I love the feel and the throttle response of the bike in the 3000-3500 rpm range. Is it bad for the engine/transmission to cruise in this range for long periods of time? in 3rd 4th 5th gear. I called Kawasaki customer support to ask them. A phone tech said, I could cruise at 4000rpm if I wanted to, just keep an eye on oil level ( it may use some). What do you guys think.Thanks in advance for your opinion.