I actually went onto wondering if taking the CV shafts out would increase mpg (without them the front end wouldnt spin) and decrease the desire to wheel (cause at the time my balljoints were :guns. I learned that the unit bearing in the knuckles would not work without the outer joint. So I just threw out the idea for lack of care. I just dont worry about mpg anymore. I just fill up when she needs it. Tho I am concious about it, it is only for folks at the gas station asking how often I am there (to leave them :hmm: /:thinkIf you know your not going to be using your 4x4 is it better to remove the front driveshaft until your going to use 4wd. does it save any parts or get better mpg?