Mine has always done this - only when it is baltic and only for the first few minutes. I find that properly warming up first before setting off - as in 10 minutes sitting with the engine running helps. Its no biggie though :shrug:I'm actually quite chuffed to finally hear someone else with this noise - I've tried describing it to people before as an Owl-like noise or old fashioned kettle - so you can imagine the looks I've had