Turbos in our 3 cars, all original, no issues.
2000 SAAB @143K has had Mobil 1 0w-40 for as long as I've been maintaining it (7 years), once a year.
2008 RDX @116K has seen M1, Castrol Edge EP, and PP 5W-30, changed based on MID, roughly every 8 months / 6k miles.
The 2010 hasn't hit 100K and won't for a while, but it typically gets M1 or Castrol 0w-40.