Every Ford I've ever owned with the Oil Life indicator ticks off 1% every 100 miles. Seems more methodical than science'y. Good oil is gooder. Hard driving is harder.
I'm a fan of the micromobiles. I pondering adapting a ditch light bracket for an antenna. Got to mount the lights first and see what material I have left to work with.
Pic of where you mounted your micro mobile? Antenna placement? I have one in my F150 and found that placing the antenna behind the backseat headrest didn't give up any significant range vs sticking it on top.