milkyjoe01

Hi guys. I have an issue with my oil. I have a 2004, Audi A3, 2.0 TDi BKD. I am getting a puff of blue smoke only at start up, it doesn't do it whilst the engine is running, its only at start up & only when its been sat for over 15/16 hours. Any less & it doesn't happen. With this in mind I checked the dipstick & it was reading min. I think so anyway cuz the dipstick is strange to read. It was about 1mm above the min. It is the dipstick with 2 bits of plastic, 1 bit at the tip which is shaped like a bullet & the other bit of plastic at the top of the max. level that is like a ball. With this in mind I topped up the oil with 500ml but now its reading way over max!!!!! My questions to anyone are:
no. 1: Has anyone experienced the blue smoke on start up & resolved it or can anyone suggest what the issue is.
No. 2: Does anyone know how much oil takes the dipstick from min. to max.?