Thunderbear Posted September 7, 2011 Share Posted September 7, 2011 I tend to get 240 on an 18 gallon tank. That's even when I had the stock size tires and only 10,000 miles on my h.o. It's also an ax-15. How do some of you get such good mileage? Light foot, conservation of momentum and a four banger helps me. I recommend keeping track of your mileage on something like Fuelly. I always take the very high mileage numbers with a grain of salt, that's why I like Fuelly.. keeps a log of actual mileage. You're getting about what I get in my lifted TJ.. As opposed to the MJ: Link to comment Share on other sites More sharing options...
acfortier Posted September 8, 2011 Share Posted September 8, 2011 I usually get around 330, before I go fuel up. Average around 20 - 21 mpg. Not bad for a 18-gal tank. Link to comment Share on other sites More sharing options...
johnj92131 Posted September 26, 2011 Share Posted September 26, 2011 For the first time in the 5.5 years I have had my Comanche, I took it on a road trip from San Diego to San Louis Obispo to pick up a SnugTop shell. On the way up I got 20.3 mpg with speeds from 70-80. On the way home I slowed down to 60 all the way; Got 23.3 mpg. Truck has 227K miles, 4.0, Automatic, 3.55, 235 x 15 tires. 23.5 gal tank. So at 23 mpg, I should have been good for over 530 miles on the tank. Way more than my bladder can go. John Jackson 91 long bed, Big Ton, AW4 2wd, front and rear trailer hitches. Link to comment Share on other sites More sharing options...
big66440 Posted September 26, 2011 Share Posted September 26, 2011 Can the bigger 23 gallon tanks be installed on the short bed models? if so are they difficult to find? Link to comment Share on other sites More sharing options...
COMJNUT Posted September 26, 2011 Share Posted September 26, 2011 Can the bigger 23 gallon tanks be installed on the short bed models? if so are they difficult to find? I would have to say no joy, cuz the axle would be in the way. Link to comment Share on other sites More sharing options...
Jeepman Posted September 26, 2011 Share Posted September 26, 2011 My 97+ MJ 4.0L with some mild upgrades and 4.5" lift, Too tall a gear set on 31's with the AW4 and I get about 400KM to a 15 galllon tank if I run it empty... I have plans to get this up to 600KM with the little 15 Gallon tank... Link to comment Share on other sites More sharing options...
Keith Posted September 29, 2011 Share Posted September 29, 2011 I get a consistent 19-20mpg around the city (live 10 miles out so partially highway miles), freeway at 70 mph 23-25mpg. Have an 89 4 ltr with a 5 speed, clean injectors and Champion Double Platinum plugs. Short bed with almost 200,000 miles. Link to comment Share on other sites More sharing options...
87MJTIM Posted September 29, 2011 Share Posted September 29, 2011 I get 400 +/- on a tank. That is mostly commuting back and forth to work and the auto parts store :roll: I can get 450 ++ on highway driving. 87 4.0, 5 spd, 23.5 gal. Tim Link to comment Share on other sites More sharing options...
randomguy310 Posted October 1, 2011 Share Posted October 1, 2011 my 1st comanche was a 86 2wd long bed 2.5 5speed and i drove it back from ky to cali when i got it and got 30mpg 600 miles to a tank all hwy Link to comment Share on other sites More sharing options...
AMCJeepMJ Posted January 11, 2012 Share Posted January 11, 2012 I recommend keeping track of your mileage on something like Fuelly. I always take the very high mileage numbers with a grain of salt, that's why I like Fuelly.. keeps a log of actual mileage. You're getting about what I get in my lifted TJ.. As opposed to the MJ: Indeed. I have recently started using Fuelly and I like it as well. Results so far: Its too bad there is no way to incorporate this into board signatures here... Link to comment Share on other sites More sharing options...
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