My rig wears multiple hats. Its my daily driver, off-roader and tow rig.

As a daily driver it sees anything from Seattle stop & go traffic to wide open 80 mph highway speeds, lots of wet rainy conditions, occasional snow & ice on city streets...

As a tow vehicle, it regularly pulls my 16 ft camper through the mountains at highway speeds or across questionably maintained forest service roads in all kinds of weather conditions....

As an off-roader, it's seen forest service roads, 4x4 trails of varying difficulties (easy to most difficult), some light rock crawling, deep snow, deep mud, water crossing, step hill climbs.....

I can say over the 3 years the locker has been installed, its not been unpredictable. When not in 4W drive would not even know it's there besides the occasional clicking. I've never had an incident with it during daily driving.

In 4W drive it fairly predicable. Besides the heavy steering, on occasion steering will pull to the side that has traction. The first couple times this happens can be disconcerting. Once you understand what is happening no big deal. The only other issue I've seen is it locking up when going slow and turnng hard, causing me to stop and back up a couple feet to release.

A buddy of mine installed on in his Ford Explorer about a year ago. He was saying two weeks, he couldn't believe all the he waited to install it. He absolutely loves having it.

When I bought my locker the website listed 1 locker left in stock. Just checked, the website only lists a locker for 98 - 09.