Using DFCO to increase your MPG

[adamschneider]

Originally Posted by Pavel Olavich

I believe that keeping the shifter in D can activate DFCO if you allow the tranny to automatically downshift, caused by the "grade logic" of the tranny....in this way, your shifter is in D, yet the tranny is in 3rd, and DFCO can happen, given the right circumstances of course. When I find myself driving down steep hills, I tap the brake a tad, and this often causes the tranny to automatically downshift, and I think when it does this DFCO is happening...

I just experienced this yesterday without even trying to: I was headed down off Mt. Hood, tapped the brake, and it definitely downshifted. The question now is whether this causes the fuel to be cut off.

By the way, how did people even learn about DFCO? A google search only turns up results on this forum, the cleanmpg.com forums, and a few others!