hi guys , i have a 07 fx4 screw with a 6'' lift with 35's and stock 3.73 gears.... i was wondering what your thoughts are about driving around town , should i leave overdrive on or turn it off .....should i be worried about doing damage to my tranny with overdrive on ..... thanx

 

35s from your stock size, probably 30-31 inch, is not a dramatic change but if you find that you are lugging along in 4th a lot then turn off overdrive.