So to  2008 Horse trailer extra high and long (24’, 8’6" high inside) GVW of 14k. All aluminum.
Empty is probably close to 7k. Can hold 3 horses, I may do that here and there but not every trip.
I just sold my old horse trailer that was a 1999 Hawk 2 horse goose with dressing room. GVW on it was 7k. Fully loaded may have made 6500. 7k doubtful.
So my truck was absolutely gleeful pulling my old rig. Now with the new trailer and 2 horses hills are challenging and anything under 35 mph there’s a get up to speed situation and it’s hopping through the gears more than before. I am positive there is a part of the issue is me not being used to hauling a bigger load again so it’s possible I am still on the learning curve of how/when/where to accelerate and such.
My husband says that a 10 year old truck won’t still have the same towing power, torque and hp and such that it did when it was new.
We’re wondering if this rig/setup is too much for the truck. I have not tried hauling the trailer with anything else to compare. The new 2500/3500 has a lot more capability but due to the DEF crap the mileage is much worse. (Y’all probably know this better than me.) This is of course bypassing the whole $75k price tag too.
My truck friends from the horse world say stay with the 5.9L. It’s the best Dodge diesel engine and you’ll get way better mileage hauling without having to pay for the blue stuff.
To be fair I have not gone over 3k rpm’s ever with the new rig so it’s not like I am asking it to really struggle. On the highways it was really smooth, once I got up to speed. We’re just debating if it’s in over it’s engine or will it be ok? I think it’s hard because I am used to the truck and trailer and horses zipping along, and at 10k pounds we’re not there anymore.
Thanks in advance for any advice.
~Emily