[The Newell]

The two engines are functionally equivalent with the 350hp 6v92 obviously having more horsepower. Advantage of the 6v92 is 25% less stuff when it comes time to rebuild. Fuel mileage is really dependent on the newell and your right foot. It takes the same amount of energy to move the coach down the road regardless of engine. Now, if you use the extra hp to get up the hills 20mph faster.... that burns more fuel. Given the opportunity to have either engine in comparable condition and equal money, Well thats up to you! I would only be interested in a silver series engine if it was me DD had a few issues with the pre silver series.