Doax, I had done a study last year looking at EOC vs. Coasting while idling. There are a couple factors that should be considered. How many oppertunities to coast you have and the your idle GPH. For me, I only have 10 minutes of coasting available during my 1 hour commute. My idle GPH is around 0.17, so the benefit of EOC vs. Coasting for me is only 2% or less than 1 mpg. For the effort and money to swap in an mtx, the payback would take quite a long time. However, I might find that more oppertunities to EOC if I had a MTX and if I need to replace a transmission, then the cost difference of swaping becomes minimal vs. replacing an ATX.
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