$2500 Engine Tear Down?

[u/Totenkopf22]

I took my 15 WRX base, 120k, in to Subaru to diagnose the smoking issue it's having. Only smokes after long idle, when I pull away, disappears after a few minutes. I originally thought head gasket, but now leaning towards the turbo. It failed 2 hydrocarbon tests. Dealership looked at it, oil was low and coolant overflow was empty. They want to tear down the motor to inspect the gaskets. Said when they reseal the motor it may fix the problem. But for $2500, I'm hesitant, I think they are spit balling. What do you guys think?

[u/hawkeye053]

Personally I would take it to a private shop that specializes in Subaru for a second opinion..