Gas vs Diesel

[eck-2]

we bought a crew cab duramx in 2003 and love it,shorty after the truck we bought a 37 ft high profile montana. on our trips we average 10 mpg going about 65 to 70 mph with plenty of power I passed a lot of semi's going up hill and milage should get better since it has only 35k on it

[Ishler]

Just to add my two cents. I can't speak for Ford or Chevy diesels but the service life of the Cummins engine in the 2005 Dodge is ~300,000 miles before rebuild. The first service(other than oil and filters) is at 150,000 and that's a valve adjustment. Speaking of oil changes the interval for heavy use is 7500 miles and light use 15000 miles. If you plan to hold onto the truck for a long time this factors in.