What engine lasts longer?

[Waterloo]

(01-05-2019 )DKenworth Wrote:  I would say an engine that has never been made yet! ;) but I got cummins 870 with 1230000miles on the clock and still running strong on a gallon or two of GEAR OIL in engine oil.(thanks to Rawze)

I like the 870, that was and is a simple motor. I think it was the best motor Cummins produced. The 871 is nice, but they gummed it up with to much technology due to emissions. I used to get close to 8mpg with mine all day long. I should have kept that truck.