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Opions H2 or Z-71 Suburban?
Surprisingly we averaged 12 mpg with a mix of in town and highway driving. Straight highway driving averaged 14-15 mpg. We got better mileage with the 8.1 than friends p/u trucks or burbs with the 6.0 on the highway when we compared fuel mileage towing a trailer. The 8.1 didn't have to work as...- Dougw
- Post #19
- Forum: General Discussion
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Opions H2 or Z-71 Suburban?
I liked my 3/4 ton 4wd Suburban. This one had factory 496 8.1 litre with 3.73's. It had lots of torque for pulling.- Dougw
- Post #17
- Forum: General Discussion
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2010 Yukon Gear Axle Options
Tough decision to figure to change the gears or not. My brothers Z71 Suburban with 3.73s gets 14 mpg average while my Yukon with 3.08s is getting 17-18 mpg. Take my 40000 -45000 miles a year that I drive and that equals about $ 2000 extra cost for fuel in 1 year to go to 3.73s. I would assume...- Dougw
- Post #4
- Forum: Engine & Drivetrain
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2010 Yukon Gear Axle Options
Just purchased a used 2010 Yukon 4wd with 3.08 gears. I used to own a 2003 Suburban 2500 4wd with 8.1 litre and 3.73 gears. I am finding the Yukon much more sluggish compared to my old Suburban. I would like to have a little more power from a start and for pulling a 3000 - 5000 pound trailer on...- Dougw
- Thread
- Replies: 3
- Forum: Engine & Drivetrain
