Figure 1.

Full time 4x4 - most Land Rovers and some Toyotas.

Normal driving - 25% power per wheel against 50% for 4x2 vehicles.

Figure 2.

Full time 4x4 - Same as Figure 1.

Turned front wheels makes no difference.

Figure 3.

Spinning wheel in mud; no traction and vehicle stuck.

Also applicable to LR Discovery Series 2 at idle speed before Electronic Traction Control (ETC) kicks in.

Figure 4.

Land Rover with locked Centre Diff or most 4x4's in normal 4 wheel drive. (Locked Hubs.)

Rear wheels transmit power.

Figure 5.

Locked Centre Diff - Front and Rear wheel spinning in mud. Could also be cross axle situation.

No traction and vehicle stuck.

Figure 6.

Same as Figure 5, but with Rear Diff Lock.

All the power goes to one wheel.

Figure 7.

LR Discovery Series 2 with ETC and added Centre Diff Lock actuator.

Depending on traction conditions, power is distributed to two wheels.

This is also very close to a vehicle fitted with both rear and front diff locks without the steering problems.