Check your oil filter, VW's dont like fram and they collapse when hot.

The reason the Passats had this issue is because the 1.8T motor was designed to sit in a FWD car sideways. When Audi and VW used this inline plateform, the motor lost some of its oil capacity. Turbo cars have a natural tendancy to coke oil up. The flow characteristics of that motor are better sideways, than inline.

Anyways, drain a quart of oil out, put in a quart of ATF. Start the car, but do not drive it. Let it idle, but do not load it. Let it cool, then repeat this process a few times.

After that, change the oil, use an OE filter, and Rotella Synthetic for 1000 miles or so and change again.