Fresh 904 start-up
Is it a new converter? I have heard of situations where slag from the welds on the inside of torque converter have broken off and ended up in the pan / filter on after the first fire up and run. If you're a little paranoid (like me) you'll want to pull the pan after the first fire up and run through the gears to make sure nothing has been broken loose.
I've never seen this myself, but after hearing about it from two different sources I now check the pan after installing a new converter.