Just took a trip to SoDak for pheasants from SW Missouri. I’ve got an LZ0 and my cousin has a 6.2. Both zr2, same model year, he has more miles (I left town it had maybe 500 miles so not broke in yet)- we both had three people, three bird dogs in the exact same kennels, shotguns, gear, water, and decked systems. About as close as you can get to identical “real world testing” as we drove together so same speeds, same conditions, same everything really.
We did a test from Council Bluffs Iowa to Bolivar MO. We hit KC rush hour on Thanksgiving eve so went 635 bypass but still did some stop and go due to backed up traffic at Belton. 320 miles at speeds of excess. He had to draft a semi the last few miles to make it to the first Bolivar exit and still coasted into the pump.
At fill up, I added 16.5 gallons @ $67.51 ($4.09 per gallon diesel). He added 24.24 gallons @ $80 ($3.30 per gallon premium)…he was bone dry and they squeezed a quarter gallon in somewhere

- and before I catch it from the group, I know the tank is 24 gallons, either it fit a bit more or the pump was off, I looked at the pump myself to verify.
My DEF gauge went down one mark so assuming a few bucks usage in DEF as well. If I keep my speed reasonable, I can see much better MPG than the 6.2 but it’s tough in that open country with speed limits 80+
All in, going from the ‘22 6.2 version to the 3.0 LZ0, I’m very happy with it. The hole shot difference is noticeable but not terrible, I never felt out of power under normal driving conditions…it will lose in a straight drag race but how often do you actually do that? On the highway, if you are used to driving a modern diesel with turbo spool up, it’s a very solid option in my personal opinion. Overall mileage is quite a bit better, range is where it’s hands down a winner, and the power train combo is butter smooth. Torque delivery is instant, minimal curve, which was awesome on two tracks and off road driving during the hunt.
For my personal needs, glad I made the switch. Hope that helps.