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Explorer Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer, ST, Sport, Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
Love my TrueTrac in my d44 and when I had one in the d35, and I will never own an ARB. I've seen more things go wrong with them than I can count on all of my phalanges...
The Aussie has a ton of positive feedback in all respects.
ARB is open when disengaged, requires a compressed air source to be plumbed in for engagement (i.e. more moving parts and things to fail). A TruTrac's function is seamless both on the street and off-road. A full on locker like an ARB can sometimes be a little too much for the stock parts on an IFS rig. A TruTrac (or equivalent) is often more forgiving because it does allow some slippage. However, unlike a Detroit or a Trac-Lok, it does, in fact, limit that slip.
In 12 years I've been using ARBs, the only one problem I've ever had was an explosion of the differential locker itself. But never have had a single issue with the compressor, solenoids or air lines (this is on two different vehicles BTW).
It's all in how careful (or careless?) you are while doing the installation.
The compressor works well (although a li'l slow) for airing your tires back up after you've returned to pavement too.