i cant get my limited slip to work and it used to before i changed the fluid does any one no what type of fluid or additive to put in it.

 

limited slip additive. buy it from the dealer.

 

Define "not working". Won't grab so both wheels spin or feels like it locks up all the time?
First case is possibly too much LSD additive..... second is not enough!
What brand gear lube did you put in it!

Fill in signature, under "User CP" so we know year, tranny, mods and type CTD you have!
Also, location, if interested in any good service places, or knowledgable members in your area.

RJ

 

Maybe you have a theft issue. Someone stole your Tracklok and put a convential diff in it's place??

 

If you do a search, there is a lot of reading on this subject. If you run sythetic, the Royal Purple 85W-140 seems to work well for many mebers. It needs no additives. Many other brands wil cause your LS to quit the LS function because they are too slick. The LS additive adds more slick, so you normaly will not need that, unless your truck hops around corners.

 

Had not seen thread on that.... Whose is too slick?

RJ

 

ok thanks guys and it worked when i first got the truck wich was about 11 months ago but i changed it and havent had it since i did put some additive in when i changed it that i got from napa and i will try the royal purple 85w-140 can u get that from napa or just search around?

 

I still didn't see what "not working" means here. To check LS operation you need to lift the rear axle off the ground and measure torque required to turn rear wheels, I think the spec is 85 lbs. Basically, LS does not allow the wheels to turn the opposite directions with the truck's transmission in Park or in gear if manual, and you can force the wheel to turn but it takes force, which is the spec defining if the LS clutches are working.

 

I brought mine truck to a rear end shop to check the limited slip they charge only if bad and for new fluid. one guy turned the wheel one way the other kinda turned the other wheel the opposite and felt for the drag. all was ok but I thing limit is the true name here it is very limited to what it will do for you ED

 

You should have the Dana 70 Power Lok differential... like mine. I actually think it is a pretty good unit.
I have tested it often with one wheel on wet grass or loose gravel, and the other on dry pavement.
I get about 1/3 to 1/2 rotation of slip before the 'weak' wheel locks up and grabs. I'm not sure what more you could ask for from a street vehicle.
Just my experience.

RJ

 

I was under the impression that the power lok would be an option with a limited slip in there already, I thought you needed an open diff to install one. I might be wrong. Let me know what exactly you have I would like to upgrade it at some time. I first want to change out the differentials with a 99 4x4 dodge cummins I have for its 4.10 gears and it also has the limit slip. Thanks ED

 

Factory option for 2nd gens was an open differential. On the 2nd Gen, automatic trannys, if you ordered a LSD, you got a D70 Pwr Lok!
LSD may have been included with towing package... not sure.
5 speeds, and later 6 speeds, came with Dana 80's and a Trac Lok.
Some earlier D80's may have been Pwr Lok's also. I've heard of a few but never actually seen one!

RJ

 

he never did fill out his sig.... for all we know he is talking about a toyota or whatever

 

well im not talking about a toyota you really think im dumb enough to own one of those maybe if i was a city slicker lol