Howdy folks. I realized this morning after logging on my desktop that I had asked my question in the wrong forum last night. I didn't realize there was a 2500-specific forum. Anyways.
My wife and I are planning to purchase a 2000 - 2006 Suburban 2500 4x4. I know this is a forum for the trucks, but they share the GMT800 platform, and I'm know very little about the heavy duty gas engines on this platform.
The truck will primarily be used "around town" for short hauls and around the house projects. But, with my grandparents and great-grandfather moving nearby, we will also be using this truck to drive to visit family out of state (we're in VA, we have family in CT, NC and TX). My wife and I also plan to purchase a camper in 2 - 3 years, and this will be our mule to tow it cross country.
Some brief research found that the 6.0 engine is good to tow 10k, and the 8.1 is good for 12k (ish, its a ballpark don't nitpick me). After some checking, I figure most things we will tow will fall into the 6k - 8k range, however I have a work truck that needs towing from time to time, and that's pushing 7k before I put it on a trailer. I believe the 6.0 will do fine for most of what we want to do, and I am leaning in that direction.
What kind of fuel economy can I expect out of a 6.0 or a 8.1? Do either engine (or their associated transmissions) have any major issues? Are either of these engines capable of running E-85 (yes, I'm aware ethanol is the devil, I just want to know if it can be run).
Thanks in advance!