Engine sound when is cold

[Pterodactyl_imp]

Don't worry about it. Noises can become obsessive. Enjoy the ride. Your oil change has not affected your engine. If this noise continues and becomes worse, continuing throughout the whole temperature range, take the bike to a qualified motorcycle mechanic to diagnose. Is the bike still under warranty? Perhaps not the best question to ask you after suggesting not to worry. My bike makes all sorts of noises at times. I remember asking Cormanus to jump on my bike to listen to a "noise". He heard it but couldn't pin it down so I continued on. That was about 30000kms (or more) ago. The noise has since faded into the mists of time and Last Blast still works well. I think it might have been the front tyre or brake pads. Maybe.

Cheers
Actually it was before I started using HUBRIS Omni Grade.