Originally Posted by SRT-6 Steve
Am I missing something or for the SRT, it seems that only 0W-40 is acceptable and not 5W-30. In other threads, there are people swearing that MB says 5W-30 is now the preferred.
It's actually 5w-40 Mobil 1. It is the same oil they use in their diesels and it is not the off the shelf 5w-40. There are additional additives in it that make using other brands 5w-40 not equivalent. It's a tad bit cheaper too!