Is there a Diesel or Gas break point?

BeerBrewer wrote:
What I meant by a break point, is there a point where a gas 3/4 or 1 ton truck struggles to handle a load. I'd hate to buy a new truck and find myself going up a steep grade only able to do 20 or 30 MPH. We absolutely plan upon touring out west, through higher elevations, even hitting Alaska.

You see I'm trying to avoid repeating some issues that I've had towing a trailer in the past. About 15 years ago, due to my job, we moved from Arizona to Long Island, NY. We thought it would be fun and it was a blast, to drive across the country rather than fly. We had most of our stuff moved by a mover, but we moved our vehicles (Mini-Van and Durango) and some of our "precious" stuff ourselves. So we rented the largest U-Haul trailer we could find and pulled it with our Durango, (318 V8) which was equipped to tow. After we loaded it we had the trailer weighed and we were well within the specs, but we did need to shift the load around a tad. My wife drove the Mini-Van and drove the Durango. For the most part the Durango did fine, except for the climb up to Flagstaff and on the "switch-back" on Rte 40 headed east out of Tennessee. When doing the climb up to Flagstaff I had trouble maintaining speed, I think I was only doing like 20 or 30 mph. The engine temp was climbing real high, so high that I had the heat blasting and it was summer. I had the opposite problem When we hit the "switch-back" coming out of Tennessee, I had trouble keeping my speed down and I white knuckled it all the way down. I'd rather not relive either experience if possible. Even though we had a few "issues" we had a blast. Frankly, it was this trip that spawned the idea of us getting an TT and touring the country "some day". Not only did we see some amazing sites, we also met some equally amazing people. Well "some day" has arrived!

I currently do most of the maintenance on my vehicles now and plan on doing so in the future. So the fact that a diesel contains more oil or needs some extra things done doesn't concern me at all. Unfortunately upfront costs due matter to us, but its "Better to have it and not need it than to need it and not have it"......

OK my old gasser gets down to 25 pulling max load for about 10 minutes climbing a steep hill especially at elevation. Not a big deal to me. NEVER an overheat issue. I have been at full throttle in low gear in 115 heat and the A/C on max-high without issue. I think your durango was a bit of a dog and anything near new will perform just fine right up to the max rating. Since you mentioned money is an issue I would suggest it will be OK to select a gasser and accept the limitations. Sure the diesel may pull better and not rev up so much etc.... and at what cost?