I use Mobil ! in my little VW diesel simply because dad used it in his 89 Cummins Dodge for over 10 years and over 750,000 miles and it never had a problem besides a water pump gone bad. We both run ours to 3000 miles then change the filter and go another 3000. I have about 160,000 on the TDI. I don't know exactly because my Dad borrowed it while I'm away.
With that said, even with hydraulic roller lifters in the 408, I will be running Valvoline VR1 Racing oil in the 'cuda. It only has it's third batch of oil in her right now since it only has about 10 hours of dyno time. Still on the engine stand waiting for me to get back.