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Originally posted by jeremy
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?
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A big part of this comes from the fact that USA-spawned, over-the-road truck engines are, generally speaking, long-stroke engines. They simply do not turn the high RPMs that a smaller, automobile-style engine will spin. They also carry huge amounts of lube oil. Both of these features go a long way towards extending the life of any engine.
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btw what is the avarage amount of miles on A big rig?
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Good question; how high is up?
For reference, the mid-1960's model, 220 Cummins Freightliner my Dad drove back in the 1970-'71 was already clocking 1,000,000+ miles.