ok,my engine if i start first thing in the morning,does sound a bit rattly for about 5-10 seconds,after that it sounds like a normal diesel engine,i was told its the very cold weather were having and also (putting the weather aside) that its rattly (tractor sound) is that all the oil is sitting in the sump so when started any morning either hot and sunny or ice-cold its quite normal.........IS IT ?

2.0 TDI 16V 2005 BDK ENGINE

Someone else told me that keep an eye on the coolant,if the level drops then its the cylinder head,its drippin coolant on to the piston and when you start it in the morning thats what the noise is.....kind of freeked me out tbh.

Cars got full audi service history upto date,looses no coolant after driving it around 300 miles up and down a-roads.

once started in the morning after a few seconds sounds normal.......should i still worry? or are you guys in the same boat?
mileage is around 99k