Originally Posted by RubenZ
Exactly, you put that weight on a Big Block Gasser and I guarantee your MPGS will be less than 9mpg. When Chevy had the 8.1l and 454's they were getting like 7mpgs.
I towed my 4200 LB trailer 2000 miles with a late 07 duramax diesel and
I have towed the exact same trailer on the exact same route before and
got 9.5 with my gasser-- see my signature for details.
Many posting to this thread lead me to believe I can not expect much better
with the diesel.
I began this quest hoping a diesel would save me a little on fuel costs.
Looks like the main or only advantage to diesel over gas -- for me
at least-- is the honking huge increase in torque of a diesel.
Bottom line looks to me-- stay with my current rig and be happy.
OR keep the diesel and look for a used 5er in the 28 foot range but don't expect
to save any on fuel cost if I do that.
At the present time I have 2 trucks sitting in my driveway.
One of them has to go some time this summer......