Along with the Delvac 1 listed above, I am a fan of the commonly available M1, TDT, 5W-40. Excellent HTHS of 3.8, plenty of ZDDP and a really nice TBN of 10.7.
https://www.mobil.com/English-US/Passenger-Vehicle-Lube/pds/GLXXMobil-1-Turbo-Diesel-Truck-5W40
https://www.mobil.com/English-US/Passenger-Vehicle-Lube/pds/GLXXMobil-1-Turbo-Diesel-Truck-5W40