I thought I would try to describe in a little more detail how I drive for fuel economy in non-highway driving. I have a ScanGauge II installed and mounted on the steering column and I usually have it displaying engine load, engine RPM, and coolant temp. I also have the navi display showing the energy flows.

Of course, the best case scenario is when I am traveling on a slight decline such that I can shift to N and maintain speed. If I just need a little extra, I'll use some battery power to keep me going at the necessary speed. If nobody is behind me, or if there are multiple lanes with low traffic, I don't mind coasting well below the limit.

If I'm going uphill, I try to keep the engine at a relatively high load (above 80) and hopefully charging the battery as well.

If I am driving on relatively level ground and traffic permits, I will pulse and glide between 40 and upper 20s. Personally, I do not like to impede the flow of traffic and do not feel comfortable driving more than a few mph's below the limit if I have traffic behind me.

Overall, I try to keep the battery SoC between 4 and 6 out of 8 bars. If I am going to work and know that the vehicle will be sitting for many hours before driving, I will likely take the SoC down to about 4 bars. This way, when I do finally start back up and the engine is running, at least it will be doing something productive by charging the battery as I'm cruising around at low speeds.

The engine block heater has been a big plus and my tank fuel economy has been going up since I installed it. Here is my current tank.