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Thread: Fuel Economy on 3.6L V6 Grand Cherokee???

  1. #11
    Fresh Catch JBO-JK's Avatar
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    Re: Fuel Economy on 3.6L V6 Grand Cherokee???

    I only run 89 octane defiantly saw an improvement in mpg between the 87/89 octane

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    J Bolinger KCCO

  2. #12
    Old Timer 2013rubirick's Avatar
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    Quote Originally Posted by JBO-JK View Post
    I only run 89 octane defiantly saw an improvement in mpg between the 87/89 octane

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    next time i put gas in im gonna put 89 in. Thanks for the idea. have you tried 91?

  3. #13
    Fresh Catch JBO-JK's Avatar
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    Re: Fuel Economy on 3.6L V6 Grand Cherokee???

    I have tried 91 did not see a difference between 89/91 I normally set the cruise control about 72 on the highway didn't notice much of a change around town though.

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  4. #14
    Knows a Thing or Two ProfessionalDriver's Avatar
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    Thanks for the feedback guys I've heard numerous times the debate on MPG for the '12+ JKU's.

    I'm just curious if anyone has any experience in a '12+ Grand Cherokee with the 3.6L V6

  5. #15
    Old Timer Jackal01's Avatar
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    I have had my '12 Laredo WK2 4x4 for 18 months. Before lift, wheels and tire I got 22 highway and 18 city. Within 100 miles of ownership the lift and everything was installed so the engine was not broken in and not even a full tank was used. I just had a CAI and exhaust put on a couple months ago but before the two I was getting 17 city and 21 highway. The CAI was put on first and the MPG dropped to 15 and 19. The Gibson exhaust (installed a month later) brought it back up to what it was before and actually ever so slightly better, 17-18 city and 21-22 highway. I don't drive easy either.

    On our trip last summer to Durango from Houston I was at 22 MPG by the time I hit Dallas and maintained that MPG all the way to Durango. So estentially the CAI and exhaust brought the MPG back up. I cannot complain about the MPG at all. Just wish a tuner was out for it.
    Last edited by Jackal01; 07-07-2013 at 12:05 AM.

  6. #16
    Knows a Thing or Two ProfessionalDriver's Avatar
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    Quote Originally Posted by Jackal01 View Post
    I have had my '12 Laredo WK2 4x4 for 18 months. Before lift, wheels and tire I got 22 highway and 18 city. Within 100 miles of ownership the lift and everything was installed so the engine was not broken in and not even a full tank was used. I just had a CAI and exhaust put on a couple months ago but before the two I was getting 17 city and 21 highway. The CAI was put on first and the MPG dropped to 15 and 19. The Gibson exhaust (installed a month later) brought it back up to what it was before and actually ever so slightly better, 17-18 city and 21-22 highway. I don't drive easy either.

    On our trip last summer to Durango from Houston I was at 22 MPG by the time I hit Dallas and maintained that MPG all the way to Durango. So estentially the CAI and exhaust brought the MPG back up. I cannot complain about the MPG at all. Just wish a tuner was out for it.
    Thanks for the info... We picked up a '14 GC today. Looking forward to the better fuel economy. We're coming from a 10-11 MPG, 6.2L GMC Yukon, so pretty much anything is better than that.

  7. #17
    Old Timer Jackal01's Avatar
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    Reports from other '14 WK2 owners is that the new 8 speed tranny is getting better MPG than the '11-'13 WK2.

    Oh and congrats.


    I need to do the opposite of y'all are get a JKUR. But...that is 5+ years down the line.
    Last edited by Jackal01; 07-08-2013 at 01:38 AM.

  8. #18
    Caught the Bug
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    my 2013 jk 6 speed is getting 150 miles to a full tank

  9. #19
    Resident Smartass OverlanderJK's Avatar
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    Fuel Economy on 3.6L V6 Grand Cherokee???

    Quote Originally Posted by 2k13jk View Post
    my 2013 jk 6 speed is getting 150 miles to a full tank
    that is not good!!
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  10. #20
    Hooked Firewrangler's Avatar
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    Know this is a little late, but my wife's Grand Cherokee Limited is getting right around 21 mpg on the interstate, but that's running 80. Drop down to about 70 and you can bump 24 mpg. 17 to 18 in the city! Hers is a 2011.

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