Hey guys now that I have gone to 35's, should I be driving with the overdrive button turned off? I have stock 3:73 gears. It is not too bad actually. I have a 30 min. drive to work and was wondering what you guys recommend. ON or OFF.

 

I have 35's and I roll with it off all the time. One hour commute to work on a freeway that isn't flat at all. Having it off I noticed my trans not working as hard to keep up.

 

hm.. ok i am also a little confused i have a 4inch lift with 35's stock gears in an X if that matters its an auto. ok so i run with the OD on i think i dont push the button in when i drive, but when i occasionally off road i turn it off by pushing the button. but what your sayings is that everytime you dirve you push that button to turn it off? because im not completely sure what i need to do to make my JK last me with this circumstance.

 

With the rolling hills and mountains you have there, I would turn OD off to save wear and tear on the transmission. Without OD, and at highway speeds you are going to be right in the window of where 5.38s would be.

 

Leave mine all the time turn it off on the hills if I feel it downshift

 

Basically, switch it off if you feel the trans gear hunting or the torque converter constantly locking and unlocking (your rpms will vary by about 200 rpms at a constant speed). If the rpms are too low and it's stuck in OD, switch it off if you either need the torque or for some engine braking going downhill.

I'd also switch it off if you're towing (and staying at a reasonable speed doing so).

 

Anybody else wanna comment?

 

Does having the OD off hurt your milage? When I turn OD off I find that I'm running at about 3000 rpm at 70 mph. With it on I'm at 2000 rpm. Or does it help because the engine isn't fighting the transmissions gearing issue?

 

If your cranking above 2700 rpm on the highway I would turn the OD on, if you are below that leave it off and your mileage should stay stagnant or improve.

 

Running with the OD off is not going to cause any problems is it?