None if this is fact its opinions that's the problem you think your OPINION is fact. I gave no bad info and you wouldn't have either if you acknowledged that it was your opinion. If its fact post links to reputable manufacturers or studies where this was discovered to be the case everytime with out fail. BTW everything can fail the question is how many points of possible failure do you want. That's what I have been saying the whole time. Now got get some vagisil and a midol and stfu.
OK, here's your problem
#1 You don't know what you're talking about.
Cache is supposed to be vacuum
It's called a CAD = Central Axle Disconnect
#2 The OP NEVER asked about a homebrew posilock system yet you jumped right in and said he'd have to drill a hole. NOT TRUE = BAD INFO Then you went back in the next post and talked about the price for the unit he linked to, and again said he would have to drill a hole, and AGAIN NOT TRUE = BAD INFO
#3 You talk about water/mud etc. being able to get in and then later talk about boats and what not. The Jeep is not a boat, based on your logic the lube filler holes on the diffs, the stock vacuum system, the breather hoses, etc would all allow water/mud etc. to access the diffs. So once again Possible but not likely, hence why I originally said if someone were completely wreckless = BAD INFO
Have you actually looked at the end of the axle shaft at the C/knuckle? If not you should check it out because there's a big gaping hole at the end of the housing covered by a piece of clip together plastic, what do you think can't get in there that might
seep through a threaded and sealed fitting on the CAD housing.
#4 You said he'd then have to worry about the cable catching on things. I simply pointed out that you would also have to worry about the vac. system, breathers, etc. So once more, you have no idea WTF you're talking about but spouting advice. Again BAD INFO
#5 I have actual experience with these things, I know for fact WTF I'm talking about. I don't need manufacturer studies to show that. Certainly somethings will fail, everything in fact at some point, but you've provided nothing to support your I heard one time from a friends cousin type BS. Perhaps you can provide studies to support what you've said, until then they're simply your uninformed and wrong opinion.
Once more, I was NOT trying to be an *** toward you, I was trying to provide the OP with FACTUAL real world info. Not simply an opinion or a second hand story. Had he asked whether he should do the posi lock or TJ/XJ shafts, I would have offered an opinion and as surprising as it may sound to you, mine would've agreed with yours.
Now, can we move on?