4-Wheel Drive interestingly enough, both units are all-wheel-drive, use a push button to engage the 4-wheel drive, and have its own system for true 4-wheel drive. The Outlander uses the Visco-Lok front differential. This is a locking front differential that uses hydraulic pressure to lock both front wheels. As one wheel starts to slip or spin, this action creates the inner working of the differential to act as a hydraulic pump and puts pressure against the inner clutch pack making a self contained, hydraulic front locking differential. This unit can sense and control the needs mechanically as the vehicle needs more traction, steering effort is not an issue. You can also put track on your ATV, but you need more power or a bigger ATV.
Snowmobiles have a track and ski's. They only can be driven on snow and not in mud and over trees and rock. They can not be driven in the summer because the ski's and track can get wreaked real easily on the pavement and grass or dirt.
"TWO THUMBS UP"