Comments by "Reaper" (@Reaper-cm4jr) on "Is This Toughest US 6-Cylinder?" video.

  1. Perhaps they are only including gasoline engines here. If Diesels are included, by far the most durable inline 6 engine in my opinion is the Cummins 6BT Diesel.I have seen more than one with in excess of 500,000 miles on and still going strong.
    1