FRT DRIVE SHAFT

[mdoyle]

Just taking out the driveshaft is not the same as a true two wheel drivetrain, you've still got the inertia and combined friction of the balance of the four wheel drive assembly.

You're still turning the transfer case and the front wheels are still driving the half shafts and differential without the driveshaft connected.

I think the mileage savings would be negligible if they existed at all.