I see this topic here and there but not on the Hybrid Driving discussion. I understand I can shift into L any time. I can shift into reverse or park at 75MPH if I want to. Does car ignore L like it does R and P when on highway going flat or uphill? 1. How can I use the L (low) button to boost my MPG? 2. Should I use the downhill button at anytime other than going down a mountain or pulling a motor home (yeah right..)? From the 2017 FFH manual page 147
Low:
Low (L) is designed to mimic the enhanced engine braking available in
non-hybrid vehicles. Low gear will produce high engine speeds to provide
necessary engine braking. This is normal and will not damage your vehicle.
In low gear, the gas engine will remain on more often than in drive (D).