the manuals already say 3,000 mi under sever service. *95% of people fit
this category.

--
Steve Barker


Now there is another claim that's going to need some backup.

I think I'm a pretty typical driver, and the system built into my car
usually says it's time to change at around 7000 miles.

There may not be a precise definition of "severe service", but I'd be
skeptical of any definition that came from anyone selling oil or
filters.