Originally Posted by
ImportLuv
it works whenever it feels like it.
yeah haha, and obviously doesn't give close to 50/50 power even when it does.
"Viscous LSDs are less efficient than mechanical types, that is, they "lose" some power. They do not stand up well to abuse, particularly any sustained load which overheats the silicone results in sudden permanent loss of the LSD effect. They do have the virtue of failing gracefully, reverting to semi-open diff behaviour, without the graunching of metal particles / fragmented clutches. Typically a viscous-differential that has covered 60,000 miles or more will be functioning largely as an open differential. The silicone oil is factory sealed in a separate chamber from the gear oil surrounding the rest of the diff. This is not serviceable and when the diff's behavior deteriorates, the VLSD center is replaced."