(Jan. 24, 2012) -- Cummins has announced that its new ISX12 heavy-duty engine with optimized calibrations can deliver up to 12 percent better fuel economy than the ISX11.9, reports Fleet Owner.
(Jan. 24, 2012) -- Cummins has announced that its new ISX12 heavy-duty engine with optimized calibrations can deliver up to 12 percent better fuel economy than the ISX11.9, reports Fleet Owner.