SaharaTJ Posted May 10, 2006 Share Posted May 10, 2006 i was wondering what some of you guys with the 2.5L get as far as mpg? So i know what I'm looking for as far as gas. I know its a jeep so real good mpg is outta the question but I'm trying to see if the mj will do better than my tj. Link to comment Share on other sites More sharing options...
bigd44889 Posted May 10, 2006 Share Posted May 10, 2006 mine does real well it gets between 30 to 35 mpg depends on hwy city and mood lol i am happy with mine never have had a prob. with mpg or power it has a 4 speed by the way Link to comment Share on other sites More sharing options...
mjeff87 Posted May 10, 2006 Share Posted May 10, 2006 Wha??? 30-35?? I gotta go get me some of that Ohio gas-o-lean :D I get an average of 18-20 in mixed driving (that's with the CAD shimmed over and pass side axleshaft locked full-time). Back when it was a 2WD (and had a few thousand less miles on it), 23-25 mpg wasn't uncommon :cry: YMMV, Jeff Link to comment Share on other sites More sharing options...
bigd44889 Posted May 10, 2006 Share Posted May 10, 2006 i run alot of hwy befor it blew up drop tail gate and nothin loaded in the back all stock 205/75/15 2.5 4 speed put a cap on it and it droped to about 15 mpg took it off went right back up Link to comment Share on other sites More sharing options...
bigd44889 Posted May 10, 2006 Share Posted May 10, 2006 u have an auto and hills i live in flat land my camaro got 35mpg hwy up here i got south on vacation it droped to 25 mpg in the hills and higher speed limits Link to comment Share on other sites More sharing options...
SaharaTJ Posted May 10, 2006 Author Share Posted May 10, 2006 I would be more than happy with 20 to 25 mpg. I am estimating about 14-16 mpg mixed driving in my tj but I'm not sure cuz my speedo is off and I'm too lazy to swap out speedo gears that and I'm so used to it being off i don't know what i would do if i had the actual speed. And it will be a 5 speed 4x4 so I'm hoping for 20+ just hope I'm lucky! Link to comment Share on other sites More sharing options...
mjeff87 Posted May 10, 2006 Share Posted May 10, 2006 Actually, mine's a 5 speed, not an auto. I've stepped up to 235's from the stock 205's (but I've changed my speedo gear). But I've discovered that leaving it in 4th more often as opposed to shifting into OD is helping economy-wise. I only use 5th now on the interstate, everything else I stay in 4th (unless coasting on a downgrade). I'm moving up to 31's when I regear to 4.56's...I'm hoping it'll basically be a wash and things won't really change that much mileagewise. Normally my MJ isn't my DD, but it has been for the last couple of weeks :oops: I used to drive it about 1X a week. But one thing I've noticed now that I'm driving it daily as a commuter vehicle (LOL) is that the more I drive it, the better the gas mileage is getting :nuts: I dunno, I guess things are "loosening up" some the more I drive it, and it's going down the road more smoothly. Trust me, I ain't complaining!! Jeff Link to comment Share on other sites More sharing options...
Pete M Posted May 10, 2006 Share Posted May 10, 2006 Back when the 88 was a 2wd DD, it always ran crappy Monday morning if it sat all weekend. :dunno: Link to comment Share on other sites More sharing options...
GirsMJ86 Posted May 11, 2006 Share Posted May 11, 2006 you know that if you leave the tailgate up you get even better gas milage then with it down or off. mythbusters proved it. if you want it explained it goes something like this. with the tailgate up there is a sort of cyclone in the bed behind the cab that keeps the fast moving air going over the bed. with the tailgate down that cyclone isnt there so the fast moving air hits the tailgate or bed and creates drag. and there you have it. :chillin: alex Link to comment Share on other sites More sharing options...
whowey Posted May 11, 2006 Share Posted May 11, 2006 you know that if you leave the tailgate up you get even better gas milage then with it down or off. mythbusters proved it. if you want it explained it goes something like this. with the tailgate up there is a sort of cyclone in the bed behind the cab that keeps the fast moving air going over the bed. with the tailgate down that cyclone isnt there so the fast moving air hits the tailgate or bed and creates drag. and there you have it. :chillin: alex Come on, Pete... Post the 'highly technical artists rendering' You know you want to.(I really could use the laugh) Link to comment Share on other sites More sharing options...
GirsMJ86 Posted May 11, 2006 Share Posted May 11, 2006 well i didnt want to post it and look like I'm too technical for everyone but i figured with the gas prices today i would post it since it was proven. plus i mean you might get about 30 more miles like they did. alex Link to comment Share on other sites More sharing options...
c0mt3k Posted May 11, 2006 Share Posted May 11, 2006 mythbusters = proven? hmmmm ^_^ Link to comment Share on other sites More sharing options...
GirsMJ86 Posted May 11, 2006 Share Posted May 11, 2006 well they ways they did it. it came out as the ol put the tailgate down for better gas milage myth was busted. alex Link to comment Share on other sites More sharing options...
c0mt3k Posted May 11, 2006 Share Posted May 11, 2006 still how can they be trusted? lol its really only a tv show Link to comment Share on other sites More sharing options...
Pete M Posted May 11, 2006 Share Posted May 11, 2006 Unfortunately Mythbusters didn't actually "prove" anything. A single experiment on the highway does not a "scientific study" make. And the "water tunnel" didn't actually prove anything except that the little vortex does form. According to what they showed on TV, it's pure speculation that the vortex has anything to do with drag. They should have tried to measure drag on the little model or run the highway test over and over and over again to eliminate all those other variables they didn't take into account. Now, I do believe that the tailgate is better up than down, but not because I watched the show. Auto manufacturers are desperate for every little mpg they can squeeze out of their thirsty pickups and if they could get a gain out of breeze-through tailgates, I'm sure they'd do it. I mean, they spent millions on MDS. Propping the tailgate open is, well, free. Link to comment Share on other sites More sharing options...
Burls Posted May 11, 2006 Share Posted May 11, 2006 pete beat me too it Link to comment Share on other sites More sharing options...
GirsMJ86 Posted May 11, 2006 Share Posted May 11, 2006 and yes there was also the fact that auto manufacturers say that the little vortex keeps air out of the bed. i forgot to put that in there before. :oops: alex Link to comment Share on other sites More sharing options...
bigd44889 Posted May 11, 2006 Share Posted May 11, 2006 i saw the show and wasn't it a newer truck mine is an 88 not new thay wern't that woried about it then it wasn't an mj and i didn't put gate down it don't have one lol i havn't made it yetso it don't matter lol Link to comment Share on other sites More sharing options...
GirsMJ86 Posted May 12, 2006 Share Posted May 12, 2006 yes they were newer trucks but the concept shou be the same on any truck. alex Link to comment Share on other sites More sharing options...
Oizarod115 Posted May 12, 2006 Share Posted May 12, 2006 this is totally off-topic from mj gas mileage but its completely nuts so ill post it anyways my bro is running a 90 renix 4.0 XJ with 220+k miles on it blowby like crazy bad compression gas gets in the oil (way past due for a rebuild but a strokers on its way) pushin 33" superswampers with 3.55s and AW4 and he gets... drumroll 19-24mpg :nuts: Link to comment Share on other sites More sharing options...
Pete M Posted May 12, 2006 Share Posted May 12, 2006 Something tells me he never corrected his speedometer. Link to comment Share on other sites More sharing options...
Oizarod115 Posted May 13, 2006 Share Posted May 13, 2006 Something tells me he never corrected his speedometer. not even a cable there. lol. gps Link to comment Share on other sites More sharing options...
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