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Topic Review (Newest First)
03-25-2011 12:38 PM
jgorm That would surprise me, I never said it was possible. If you could get an average of 1mpg better over 10 tanks of gas you would be doing damn good. I range between a low of 8 mpg and and a high of 17mpg. It depends on many factors.
03-25-2011 11:08 AM
jp2611
Quote:
Originally Posted by jgorm View Post
I be surprised if you can get more than 3mpg better doing everything in this thread and limiting your top speed to 60 mph. Speed is the biggest killer of mpg. I can get 35 mpg at 45 mph on level ground, and get 13-14 mpg at 70 mph.
3mpg better is about a 10% raise-how about if your pay went up 10% ?
03-25-2011 10:58 AM
jgorm I be surprised if you can get more than 3mpg better doing everything in this thread and limiting your top speed to 60 mph. Speed is the biggest killer of mpg. I can get 35 mpg at 45 mph on level ground, and get 13-14 mpg at 70 mph.
03-25-2011 10:25 AM
Glassguy I read on another thread that the defrost settings turn on the A/C periodically to dry the air. Even though you got the heat cranked, if it's on defrost your A/C is still stealing some mileage. Probably not enough to notice, but it's something!
03-25-2011 12:09 AM
jp2611
Quote:
Originally Posted by Tiki_Al View Post
i like this a lot, what top is this ?
Thanks- It is the wraparound wind jammer, with a duster deck cover. I can put the bikini top and half doors in just a couple minutes. There is a small gap around the rollbar but it is pretty weather tight. With TJ heater and heated seats I am still comfortable/hot down to 27*. Hasn't been colder than that since I put seat heaters in and switched tops.

I just got a halftop in Dec and like it for winter-but it doesn't feel as "open" as removing bikini top.
03-24-2011 06:03 AM
Tiki_Al
Quote:
Originally Posted by jp2611 View Post
Okay I don't know the "why" but with 31 BFG's, I6, and 5 speed, and this top, my mileage goes up from 18-19 to 20-21 not a lot but it helps. Maybe it's the weight, maybe it is the drag, from the bows on the soft top-I just know I love summer!!!
i like this a lot, what top is this ?
03-24-2011 05:28 AM
joemd60
Quote:
Originally Posted by sparky28 View Post
So true. I've had three jeeps in the past. Sold my 97 Tj about 4 years ago. Have driven a couple of Ford trucks since. (loved my F150 too!) But just got back into the Jeep game with an 06 LJ. Very glad to be back!
Good to hear, and eventually I will be back in the game. The Jeep is in my blood, and that is why I support and come to this forum.
03-24-2011 02:06 AM
Lumberjack we own jeeps, whether hardtop or soft top, bigger wheels or stock. MPG suck all around. Buy a hybrid if your looking to get max miles for long trips
03-24-2011 01:08 AM
Sherpa
Quote:
Originally Posted by tar View Post
what difference does it make using the a/c on the freeway vs in town?
Running the A/C puts extra drag on the engine itself. Driving with the windows down adds aerodynamic drag. Either way, this drag must be overcome and thus your fuel economy is affected.

At freeway speeds, you are creating high aero drag and putting the windows down kicks it up even higher. In this case, the engine drag from the A/C is usually smaller than the added aero drag from windows down**, so it is usually more efficient to run the A/C than it is to have your windows down on the highway.

Around town, there isn't much aero drag because you are going slower. At these speeds, the engine drag from the A/C will be higher than the added aero drag of windows down, so it is usually more efficient to turn the A/C off and put your windows down.

**: this claim applies to an average car's aerodynamic properties. Since a Wrangler is about as aerodynamic as your typical barn, it might be more efficient to keep the windows down on the highway rather than run the A/C. Only back-to-back testing can really confirm this.

For what it's worth, I always run a bikini top, a duster cover and no upper door halves in the summer. Despite this, my observed summer fuel economy is essentially identical to my winter fuel economy when I'm driving with the entire soft top in place on the Jeep. YMMV
03-24-2011 12:09 AM
jp2611 Okay I don't know the "why" but with 31 BFG's, I6, and 5 speed, and this top, my mileage goes up from 18-19 to 20-21 not a lot but it helps. Maybe it's the weight, maybe it is the drag, from the bows on the soft top-I just know I love summer!!!
03-23-2011 11:53 PM
sparky28
Quote:
Originally Posted by joemd60 View Post
Ask me, if you trade or sell your Jeep you will be sorry. The regret runs deep, maybe you will be different and it won't matter either way. Good luck in whatever you decide.
So true. I've had three jeeps in the past. Sold my 97 Tj about 4 years ago. Have driven a couple of Ford trucks since. (loved my F150 too!) But just got back into the Jeep game with an 06 LJ. Very glad to be back!
03-23-2011 07:43 PM
joemd60
Quote:
Originally Posted by BLK00TJ View Post
This is so true. I've had a lot of people tell me that they used to have a Jeep and regret getting rid of it. I've yet to have someone tell me that they were glad.
June 7th will be one year without it, and I miss it and regret it like it was yesterday. Nice Wrangler you have there to, it looks just like my 04.
03-23-2011 07:28 PM
tar
Quote:
Originally Posted by Sherpa View Post
Here are a few more ideas:

1. Never use the A/C.
2. If you must use A/C, only use it on the freeway--never in town.
3. Run pure street tires--definitely no mud terrains.
4. Remove your mechanical fan and install an electric one.
5. Be very gentle with the throttle--never, ever floor it.
6. Drive slower! Never go faster than 60-65 on the highway.
what difference does it make using the a/c on the freeway vs in town?
03-23-2011 07:15 PM
BLK00TJ
Quote:
Originally Posted by joemd60 View Post
Ask me, if you trade or sell your Jeep you will be sorry. The regret runs deep, maybe you will be different and it won't matter either way. Good luck in whatever you decide.
This is so true. I've had a lot of people tell me that they used to have a Jeep and regret getting rid of it. I've yet to have someone tell me that they were glad.
03-23-2011 07:09 PM
BANGER What kind of mileage do you get now ? I have the 6 Cly 5 Speed and 32 inch tires and get 17mpg and alitte over running 60 mph .

Best bet is new plugs and new air cleaner plus tire psi .
03-23-2011 06:10 PM
joemd60 Ask me, if you trade or sell your Jeep you will be sorry. The regret runs deep, maybe you will be different and it won't matter either way. Good luck in whatever you decide.
03-23-2011 05:57 PM
Sherpa Here are a few more ideas:

1. Never use the A/C.
2. If you must use A/C, only use it on the freeway--never in town.
3. Run pure street tires--definitely no mud terrains.
4. Remove your mechanical fan and install an electric one.
5. Be very gentle with the throttle--never, ever floor it.
6. Drive slower! Never go faster than 60-65 on the highway.
03-23-2011 05:51 PM
UnlimitedLJ04 Spending less on gas is simple. Don't drive the Jeep.

03-23-2011 05:41 PM
BLK00TJ 1. Tailgate semi trucks. Drastically reduces wind drag. Not the safest route.
2. Only drive down hill. Round trips are impossible however.
3. Reduce the size of the tires. I have 235/75/15 (~29/9.3/15)on mine and get over 18mpg according to garmin calulations. However, I hate the look of them and can't wait until they wear out or the delinquents across the street slash them.
03-23-2011 04:55 PM
InvertChaos
Quote:
Originally Posted by dstacy
...........and keep the softop on. Dropping the top dramatically lowers mpg.
Quote:
Originally Posted by uf20wop
but multiplies the fun!
It's worth it I think lol
03-23-2011 04:53 PM
uf20wop
Quote:
Originally Posted by dstacy View Post
...........and keep the softop on. Dropping the top dramatically lowers mpg.
but multiplies the fun!
03-23-2011 04:13 PM
dstacy ...........and keep the softop on. Dropping the top dramatically lowers mpg.
03-23-2011 02:36 PM
KawiMonsterSahara if you do a search on here you will see many, many, many people ask this same question... there is not a way that you will get a significant amount (no more than 2 mpg more) by doing aftermarket add-ons (CAI/programmer/etc)

Step lightly on the skinny pedal
slow down smoothly

those things will help...
03-23-2011 02:07 PM
Moroney167
Better MPG's possible?

I know its a Jeep but after we have had ours for a while (girlfriend an I) it is sort of killin her. It is her DD but goin for a hour commute 3 times a week and the other 4 going for a 30 mile round trip, fuel is killin the fun! Problem is I have as well as she has grown to love this lil thing somethign serious. I really don't want to get rid of it but we are gonna be buyin a used VW TDI soon. Im the diesel nut and her father has a few well over 300K an will be our tech for any issues we need. Helps. So My issue is takin over the jeep if i can afford it but my main question is.. any mods to help with MPG's. I know the BF's are not helping but there only 31's.

We have a 99 TJ Sahara 6cy auto. (I know auto sucks, but she didn't want manual and NOWWWW that she wants a TDI she wants it cause better mpgs... don't ask)

Convert my auto to manual is an idea but won't be that great im sure.


Doin a 4BT cummins swap is my next idea and lettin her use my truck until its done. Would be just puttin the TDI money into the swap and in the end a real sick jeep.

Idea's, help me haha

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