- DD - 10K mi, Mobil 1, WIX filter
- Work Trucks - 10K mi, Mobil 1, WIX filter
- Speedster - 1x yearly, Brad Penn (switching next year to Mobil 1), WIX filter
Changing oil in the normal cars every 10K makes it easy to keep track of (10K, 20K, 30K, 40K). Changing the speedster oil in the spring helps me feel like winter won't last forever.