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I live a mile back on a private dirt road so I use it whenever it snows which is several times a year. I don't get any county services on my road so the snow stays till it melts. I use 4WD LO towing people out of ditches or pulling downed trees out of the road or sometimes going down a steep hill.
Generally you can use it whenever you want, as long as the road is slick enough for the front wheels to turn at a different rate than each other around turns...
So, driving in the rain with 4x4 high should be OK, I guess.
The times I've used 4x4 ('88 Nissan Pathfinder) it was because I needed to get out of fix, or go through some heavy woods. I ended up using low. I just never had a need for high and wondered what it was really good for.
I use it when the rear end starts fishtailing in 2hi or when I get stuck. 4lo is only good for pulling trees and stuck vehicles or if your burried bad in a snow bank or mud, top speed in 4lo is like 8mph. In winter I like to pack my bed full of snow, really helps with rear traction cutting my use of 4x4.
You can use it in the rain, but on just wet pavement, I wouldn't advise it. The front will still tend to scoot when turned on wet pavement.
Wet grass, gravel, snow, mud, etc is ok.
Jimmy
Mean Bone
I see you have the LS diff. so you shouldn't need 4WD on wet pavement. The main problem in rain is hydroplaning which 4WD has no effect on anyway.--Jack
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