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I think the ship has sailed on the fuel injection type - everything is getting direct now. Does it help with mpg? Not really and nobody buying a HD truck really cares anyway. But that is what it is at this point. Piston rings is something they may well adjust over time to get them right. -
By Another JR · Posted
I don’t have detailed measurement data, but this past March we were hiking and camping in Death Valley and the Las Vegas area when this Spring’s heat wave hit with 105 plus temperatures and our 2021 L8T system kept our crew cab as cool as we wanted it (68F setting) with no trouble. Fan flows on auto once stabilized were fairly low. It seems like the OP’s system should be performing better. -
Yes that's correct on the route to Durango - we just followed what google maps recommended. That is quite the pass btw - very steep going back down. I didn't even need manual mode - I just used cruise control and set the truck at 50 I think when it was a 45 posted speed and for the most part it just held it there by keeping it in the right gear - everyonce in awhile there is a sharper turn that I just braked for - but it was pretty smooth going down it on both sides. Amazing views around there for sure - we had no real time to stop, were on the clock for a set-up time, but we did stop in some 2 horse town somewhere a couple hours oustide of Durango in the middle of nowhere for burgers. And yes - lots up up and downs on the Durango trip but I think it's a big difference going 70 vs. going 80-83 with the aero in play with these big trucks. Even the much smaller Colorado does reallt bad on gas going up over 70, I think I would have been lucky to get 18 on that trip in the Colorado honestly. The full size is definately more comfy for a long road trip too, and the amount of gear we had would have meant two vehicles if I still had the Colorado.
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I'm not sure what my temps were, but it would take my 2024 about 4-5 miles of driving before my AC started cooling. They replaced my compressor under warranty. -
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