While going through my maintenance log, I found a few more data points, often doing round trips and filling up at the same fuel station near my home.fyi for those considering a 6.0 liter with a 3.73 rear gear ratio. Here ya go!Las Vegas to Newport B...
Same fueling stations and three clicks on each fill up. Install SiriusXM, settle into a truckers lane at night and enjoy the 'listening booth'.BS... you are entitled to your opinion.I posted the data points for those seeking real world do-able mileag...
2001 Yukon XL: 2500-6L-4L80E-3.73 @ 120k milesFuel economy while in ideal flat countryside (several full tanks during a 5500 mile vacation):CC @ 55 mph: 20.6 mpgCC @ 60 mph: 19.5 mpgCC @ 70 mph: 17.7 mpgBest ever was 21.11 mpg at night from Las Vegas...
