Partagas, just my two cents. I've got an '07 2500 5.9 Cummins Quad Cab 4x4 and a '95 2500 5.4L(360ci?) Ram. Both have the same tires and I will take my '95 off-road over my '07 every time. I love both trucks but the Cummins definitely doesn't like being finessed when you need to go eeeaaaasssyyy. Never had an engine growl at me when I push on the brakes until I drove my first Cummins
. Cummins engines don't like to be reigned in IMO. That's why I love it too.
I think your friends are probably right, although I wouldn't go so far as to say they suck off-road. Side by side I'll take the gas engine for off-road and when I need to pull my house off it's foundation I'll use the Cummins.
Scott
This has been an informative post. I just called my dealer and made sure they used the proper filters when servicing my truck. Good to know. Thanks guys.