I was on the cummins web site and they have motors that have 10 to 15,000 mile service intervals one motor you put 1 million miles on it before any major overhauling.Iam pretty sure I read this right but you never know.How can they do this why can't they do this with autos? Will my barely broken in compared to these trucks 240d with 323,000 make the million mile club? I know its not fair to compare A 20 year old motor with A brand new state of the art one,so any body out there thinking of dropping A big ol cummings in there benz you would finally have all the power you need. btw what is the avarage amount of miles on A big rig?