Subaru will replace the turbo if you produce oil change receipts and it is actually failing. It is covered for 5yrs/60k miles.
Get in the habit of checking your oil every third fuel fillup. Some engines simply consume engine oil. How long since you last had oil change or checked oil in miles?
Forget what you read on internet. Realize the negative gets posted and rarely the positive.
Take it to the dealer next time as you have 9k left on your warranty to hopefully sort this out.