Can anyone provide a clue as to the differences and best use of Hi Low lock on a 2004 disco? Tried doing some searching but..... I drive on the street always in high but there is high lock and of course low and low lock?.. For deep snow what is best for traction (not speed of course). If anyone can point me in the right direction I'd appreciate the tutoring.

 

When the roads are covered with snow, and it doesn't have to be deep snow I lock the transfer case and drive around in high. It makes all the difference in the world in terms of traction, the TC feature stays quiet almost all the time. Same on hard ice. The only thing to remember is to remove the lock when the surface offers good traction, like a dry paved road or wet paved road.

Low is when you need more torque, like when climbing or getting out of bad spots.

 

You can only go about 20mph comfortably in low side. Maybe a little faster if you have the engine RPM screaming up past 4,000. I only use LOW when I'm stuck, or pulling a heavy load a very short distance, such as my boat out of the water and up the very steep boat ramp to the parking lot. Or backing my boat up my VERY steep driveway. The Disco will do both in High side, but why stress it, when it can do both almost without pressing the gas pedal in low side? High side locked if conditions are slippery, High side unlocked for normal driving, Low side unlocked for pulling heavy loads on dry surfaces, and Low side locked for slippery or stuck or needing the most pulling power you can get. Example being like if you were pulling another truck from a ditch and want to be able to lay down as much torque across as many tires as possible.

If you ever have to use the Disco in a LOCKED postion on a DRY surface try to maintain a straight path as much as possible. Turning won't actually break anything since there is a differential on each axle, but it's just better to not be turning on dry surfaces with ANYTHING locked in my opinion.

 

Thanks to you both, nice clear and simple explanation, just what works for me ��