What do we this - Trading the FG MT

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I've been wanting to remove the anti-roll bar - reckoned that's one thing to give it more flexibility.
Viscous diff is an option diff, but not the ultimate super expensive one you mention.
FG Viscous diff 8603, 8604

FG PowerLock diff 8605

Hobbythek have the Viscous at ~GBP175, and the PowerLock at ~GBP315.

what purpose does the viscous diff serve over the regular diff??
 
Every time it spins out I ask myself the same question.
I suppose if I wasn't so heavy handed, it should 'grip' the wheel with grip and limit the unloaded wheel. Doesn't seem to happen in practice, and I've built it as best I could - no missing bits as we say!!
Instead of 10000 wt diff oil that comes as standard, I spent 3 days emptying (1 hour!!) and then loading with 100000 wt (2-3 days) oil - like treacle.
Perhaps it needed to work itself in more before I jump to conclusions, but the truck has had ~2 hours since the oil change in the diff - and much 'dancing in the snow'!!
Al.
 
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