Once I had my oil changed in my Nissan PU at some hole in the wall....they put contaminated oil back in! F'd up my oil pump. The "new" oil was thin and smelled like gas!
Long story short...replaced the oil pump, but the truck made noise. Lots of tappet sounds and valve clatter. Switched to Mobil 1. Noise is gone, truck runs great! I run it in both cars. Expensive, but worth it. I know sounds weird but, I swear I can tell a difference in the way it runs on Mobil 1 compared to standard oils.