Limited Slip under load?

[boatpuller]

I run Amsoil gear oil with their limited slip additive in my Dana 70, it works fine when running empty or up to about 14KGVW, but I was hauling a Dump trailer grossing out at right around 19KGVW, when I would turn it felt like the clutches in the limited slip where shuddering like they do if there is no additive? Does the load affect how much limited slip additive you need? Will allowing the limmited slip to shudder a little hurt anything?



Thanks in advance,

Caleb

 

[DThibault]

I've had that experience twice and both times it turns out that you need new clutches in the limited slip. The facings are probably worn off the plates. If so, and you work the truck hard especially in slow turns you are putting tremendous strain on your side gears in the differential. If the clutches a fairly new a little more lube might do it but if not, I'd get someone to check them out.

 

[boatpuller]

You were correct, the clutches were metal on metal, the input yoke was grooved so bad it needed replaced and the spidergears were rounded off and bent, and my housing was grooved from the bearings spinnining and had to be machined out#@$%! #@$%! Had it rebuilt by Randy's Ring and Pinion, they are sure great people to deal with, it was twice as much as if they had just needed to replace the clutches and bearings .