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Wheatley, Arkansas | I can't comment on the Mercedes engines as we have none, however, I would rate best to worst a little different than most.
My first choice would be a 12.7DDECIII, second would be a pre-emission ISX Cummins, followed by a 3406E Cat.
The Detroit in this series was the best one made IMO, reliable, good fuel mileage, and pulled well.
The Detroit topped out at 1650 Torque where the Cummins and Cats were available in 1850, this is where the debate on performance seems to come from. This is apples to oranges comparisons, there is no way a 1650 torqued engine will pull with a 1850 torqued engine. Compare a Det, Cummins, and Cat all rated at 1650 , 500 hp and they all pull about the same.
My liking the Detroit's has more to do with ease of maintenance, repairs , and fuel economy.
That said we run all three brands, most recently acquiring some ISX Cummins due to the dislike of the 14 Liter Detroits,{too many gadgets and too low fuel mileage}. I don't really have any major complaints on the Cats other than their poor fuel economy and high cost of repairs. On the newer cats with the twin turbo, I have not heard a single good word on them,{ pitiful fuel economy and poor reliability.} It makes you wonder why Cat is getting out of the on highway engine business.
JMDFHO!
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Is there anything wrong with a Detroit Diesel/Mercedes
