5W-30 should be fine, although even that is typically not needed as the 0W-20 does well as shown by uoa's (unless you're tracking the car).
Delvac is a better fit for turbo boxers that spec 5W-30 and 5W-40. Rotella T6 5W-40 (similar to Delvac, same as Shell Rimula?) is popular in N. America because it's robust and inexpensive and Americans are VERY cheap when it comes to oil. We freak out if we have to pay $35 for 5 liters of oil.
-Dennis