Changed oil in the Sonic, just over 9,000 km. Black!
Checked Fusion, 7500 km, oil still looks almost new. Clear and no blackness. Hmmm..should I change it anyway?
Checked the F150. Last oil change was in August. Says 38% life left. Less than 4,000 km...
Hmmm...think I'll use the free one I got for "selling" my parents a new Edge.