2low and manual lockup

Vulcaneer wrote:
Have used 2LO a couple of time when pulling stumps. Sometimes to get through really deep snow. Sometimes when backing my 5th wheel up a wet gravel hill and turning into a campsite. Sometimes it is just what is needed. I try not to use it much, except when necessary, because it spools up, binds the drive train, and is tough to get it to release.

I think you are talking about 4 low.
2 low would prevent the binding but probably not provide the traction you are looking for on wet inclines.