The same as Ford V8(
http://www.tocmp.com/pix/Ford/pages/39ford-1_jpg.htm) and Ford Edge (
http://www.fordvehicles.com/crossovers/edge/allnew/).
Newer ones need more, take more and in response give more. Older ones are antique items, cannot be moved from where they're being used but cannot be used for modern day requirements either. You don't get spares for older models now. They don't run on modern day fuels and cannot run at par with other traffic.
I hope you got the idea. However, if you need technical details, post here and I'll take you to a journey down memory lane.
Regds
IJ