In the 06-09 FAQ, it lists the oil capactity as...
Engine Oil: 5.18 Qt total, 4.02 Qt without cartridge, 4.23 Qt with cartridge change
It the total is 5.18 quarts, what does the 4.23 quart with cartridge mean? To me, it reads like if you don't change the filter cartridge, expect 4.02 quarts...