[98wrangler]

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

 

[havasu]

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.

 

[hums99tj]

Put a bigger set of tires on and you won't even have to ask about over-drive.

 

[98wrangler]

What size are we talking for stock suspension?

 

[Serious Offroad]

Which tranny do you have?

 

[98wrangler]

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.

 

[RikRotorhead]

Bottom line, Jeeps do not get good mileage.

 

[98wrangler]

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!

 

[Brewster]

It's a 32rh. A very good tranny. They do not have overdrive so gas milage may suffer.

 

[Brewster]

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.

 

[Chris]

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.

 

[Xpress]

Turbocharge it. No more power problems.