Another one, I know. The details:
My 2012 Touareg TDI (3.0 CATA V6) will cross 130,000 miles tomorrow and I'm doing an oil and filter change. I have been doing oil only every 5k and oil + filter every 10k.
I have a Mann 8001x ready to go but also several choices of oil. On hand, I have:
Carquest 5W-40 dexos2
Carquest 5W-40 HDEO CK-4
Rotella T6 0W-40 CK-4
The dexos2 oil is probably the most suitable, but I don't really see the harm in running an HDEO. This engine consumes no oil and has no leaks or other mechanical problems.