All good with you Roger about the humour. Seriously though, I wonder if the modern engine and these different oils etc needs or benefits from long warm ups. I always thought that when the oil light went out on the dash the engine was good for 8000 rpm but maybe I was taught wrong.. I know when I was driving the Mercedes Actros V8 tractor units we were told by the company training officer that we didn't need to leave the truck idling for long periods of time etc. An old MG with it's primitive engine,yes, warm it up gently before putting the jandal in.