A little oil in the intake lines is normal for these car's. If you pull the intercooler you'll have a decent amount in there as well. I'd check the PCV system and make sure it's functioning properly, maybe install a catch-can if you're so inclined to reduce the amount of oil accumulating in various places. But you'll still see some blow-by even then.
BTW, 20w-50 is generally considered a little on the thick side for our cars. That turbo needs a good, steady flow of oil, and 20w-x oils don't flow as well when cold. Something to keep in mind.
As for your losing oil, how much how quickly?
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