[UFO]

I have finished data gathering with my EGR delete device, and now am back to running the factory EGR. I averaged 42.7 mpg over two tanks using pump diesel; I added very little biodiesel, as it's too cold and I failed to stockpile any blends for the winter. That's a little better than I usually can do with straight ULSD, but I had the grille partially blocked.

It's obvious again how much heat is put into the coolant with the EGR cooler. At 30F, my coolant rose to 205F on my morning drive. With the EGR deleted at this ambient temperature, I usually did not see the coolant rise over the thermostat setting of 190F.