How much oil sitting in the bottom of the intercooler is normal?

I'm doing the timing belt on my Polo, so I've taken the piping off the bottom of the intercooler and a little bit of oil dripped out. I stuck my finger inside it and it came out oily.

I wouldn't say there was a lot of oil, it didn't run out, just a few drips and a coating in the bottom of the IC. It'd probably be all soaked up by a 10cm square piece of rag, but still, it's more than nothing and I've never owned a turbo car before

Car has done 100,000km