Jeep Wrangler Forum banner

1 - 12 of 12 Posts

·
Registered
Joined
·
13 Posts
Discussion Starter #1
Hello all!

I hope someone can guide me in right direction. I have a 98 wrangler with a 4.0 and a "new" 3 speed auto that the previous owner had put in. My question is what/or is there an overdrive transmission that can be used to get better mileage? I don't want go through the hassle of changing to a manual tranny as this is my daily driver.

Any help or input would be greatly appreciated.

-98 wrangler
 

·
Premium Member
Joined
·
1,719 Posts
I have OD on my '04, and I'll be honest, I may get .05 MPG extra. It's not worth the money for the OD tranny.
 

·
Registered
Joined
·
13 Posts
Discussion Starter #6
I really don't know. It's an auto 3 speed, should be the original kind of tranny. The previous owner said he put in a new not a rebuilt transmission which was probably an off the shelf rebuilt exchange.
 

·
Internet Owner
Joined
·
9,510 Posts
Bottom line, Jeeps do not get good mileage.
 

·
Registered
Joined
·
13 Posts
Discussion Starter #8
I am thinking about getting a set of 31x10.5r15 cooper discoverer ht's on what I think are called "GAMBLER" wheels.

Anyone have any thoughts on this?

I know light truck tires went through the roof since the last time I had purchased any!
 

·
Registered
Joined
·
30 Posts
Btw.. they do not like water. The vent is right on top of the tranny, so unless the vent has been modified with a long breather tube watch out for deeper crossings.
 

·
Premium Member
Joined
·
6,657 Posts
The larger tires will probably help slightly on gaining highway mileage but around town you will be using more gas to turn them and get them moving so it is kind of a wash unless all you do is long highway trips.
 
1 - 12 of 12 Posts
Top