4 wheel drive class c

pnichols wrote:

FWIW ... in marginal traction situations you can get a standard differential to act in a limited slip manner by driving slowly with the emergency brake engaged. The brake drag forces the differential to drive both rear axles regardless of which tire has more or less traction than the other one. It works well - once you get the hang of balancing how much gas pedal versus how much emergency brake!

But not if the vehicle's an E450 with that lousy driveshaft parking brake... Snatch it on in slippery conditions and 'round ya go, one side spinning forwards, the other spinning backwards.