This leads us into the question: Which maintenance schedule do you go by? Regular or severe driving?
I find that different manufacturers define "severe" differently.
Although Subaru defines it such that everyone qualifies, I regard my driving as NOT severe, as I drive expressway and city streets exclusively, in the ratio of about 10 expressway miles per city mile.
However, the definition in the manual for severe is: any urban, coast, country or winter driving. Find me anyone who does not fit into that category !!