Hello all! I'm looking at buying an 04 Ram 1500 SLT 4x4. Has great maintenance records, 114,000 miles. My biggest concern is this "full time" 4 wd that was an option. I'm still waiting on a reply as to which system this truck has. If it's the full time system, how reliable is this system? I'd imagine MPG would suffer more than what the trucks already do. Tire wear? I did a quick search and couldn't find any hard info.