Originally Posted by bjmoose
I'm not sure I'd change to mechanical LSD for any on-pavement use - including rain, snow, etc... existing electronic traction control/Auto LSD is designed towards these conditions.
Off road is a little different - you can't enable the Auto-LSD function when you're in 4WD, which is really when you'd most want it. So for tough trails, I can see maybe making the switch - but then going all the way to selectable locker is probably a better choice anyway.
Your scenario talks about being stuck in a ditch. You know than no LSD of any sort will help to keep you *out* of the ditch in the first place, right?
I dunno. I'm still disappointed to find my 2011 has this AutoLSD function instead of mechanical. But that being said, if I do an upgrade I'm going to go to selectable locker since that fits how I use the truck.
AUTO LSD (2WD) is the same mechanical function as TRAC (4WD-Hi): Both are traction control (limited slip) without engine output regulation. They just don't use the same name. TRAC in 2WD has engine output regulation... but sometimes you need to rev it up and that is why the push of a button to turn off TRAC (2WD), which turns on AUTO LSD.
When you go into H4, the TRAC system looses the engine regulation and becomes AUTO LSD but on all four tires, they didn't call it that name sadly.
Before you mess with a new truck, in warantee still, that has a great stock traction system, learn what it is you have and try it one winter.