V6 - 2WD vs 4WD - differential wear and tear

With the V6, there’s an option turn switch from 2WD to 4WD and vice versa. The rear differential always have more wear and tear when compared to the front diff

my question is, is it better to leave it on 4WD so there is less wear on the rear differential.
Does it work that way? Thoughts ?

 

I surely WOULDN’T run it in 4WD full time! Your turning radius will be much wider, fuel consumption will most likely increase.

The part time 4WD isn’t intended to be engaged full time. Reserve it only for use on wet, snowy, icey, or muddy surfaces, or when off roading on rough terrain mostly in a straight direction. You are asking for troubles running in 4WD full time.

If you want full time AWD (All Wheel Drive) buy the Limited model.

 

(deleted for correctness)

 

The 4th gen has a center-locking limited-slip differential like the Limited 5th gen, 4WD with the center unlocked is perfectly safe on pavement here and the only thing OP has to worry about is maybe a touch lower fuel economy. No binding at all, even in 4Lo unless he presses the separate center locker button.

The rear will still get more torque than the front though due to the center LSD bias. Since differentials are pretty bulletproof in general, I would not use 4WD for the sole purpose of saving the rear differential.

You'll go farther changing the rear diff oil more often.

I would use 4WD in the 4th gen for superior u/left-turn grip, traction in the wet and loose surfaces like getting on the highway from a dirt road, mixed conditions (snow to dry pavement), exercising the 4WD system, etc.

TL;DR plenty of reasons to use 4WD in the 4th gen but saving the rear diff isn't really on there.

 

Oops, I somehow missed that this was in the 4th gen forum.