2wd for gas milage

[vxfocus]

but the whole weight of the carrier case and diff has to help not to mention the gears that have to be turned even if the drive axles are removed the engine still is using horsepower to move the drive shaft then in turn the ring and pinion gears??

[CoastieCosta567]

I have mine set up by over riding the TOD. I have a switch that turns off the TOD completely. I drive about 98% of the time on RWD and i tell you this, i don't really see a difference at all. Not worth taking it off, in my own opinion. Just drive like a grandma, not crazy and keep the tires well inflated.

[Gussie2000]

but the whole weight of the carrier case and diff has to help not to mention the gears that have to be turned even if the drive axles are removed the engine still is using horsepower to move the drive shaft then in turn the ring and pinion gears??

There's few things you can do to improve MPG.

Besides eric's suggestions i'll add a cold air intake,get rid of unecessary load in your trunk,keeping your tires @ the recommended PSI,have your VX's balancing/alignment in good stats and last but no least,using good fuel

[etlsport]

but the whole weight of the carrier case and diff has to help not to mention the gears that have to be turned even if the drive axles are removed the engine still is using horsepower to move the drive shaft then in turn the ring and pinion gears??

all true, but the weight is very small compared to the 4,000lb vehicle especially considering that you add 150-200lbs with a driver, another 150-200lbs with a passenger, probably 100-150 lbs with a full tank of gas

as far as the driveline drag, it is there, but the vx doesnt have any more drag than my civic, i cant imagine it getting much better