RON's are the most important bit, everything else is just marketing.
If anyone's THAT bothered about the condition f their engine innards, hit it with some redex every so often and be sure to "engine flush" when doing oil changes*
*: Unless you buy into the scares of engine flush bricking engines. Sure, it has happened, but I'll bet the car hadn't seen as much as an oil change since it ran out of warranty.