sibster I understand very well how VC works, I had untill recently one taken out of my car for keeping papers on my desk in place. Still I fail to understand how no-limited slip action would cause no-drive condition. Maybe I'm too stupid. What's more I know at least two cars that are driving proofs that it won't happen (if we go into non-Fords I know at least comple Imprezas that sufered centre VC failure and still had drive). Can someone please explain that in simple terms? I know how planet gears etc look like and why would they require VC to transfer torque to wheels when none of the wheels is slipping I fail to understand :-/