Is there a way to find out which limited slip diff is in the rear axle WITHOUT taking off the cover and poking around? The build sheet says"DSA Anti-Spin Differential Rear Axle" maybe it is labeled different dependent on the LSD. Wanting to change the gear oil but don't want to do so until I know if the LSD is clutch based or geared so I can put the additive if it's clutch. They might be the same on all the Daks but I don't know.

 

If it says anti spin, it's an LSD

 

Use Valvoline Synthetic gear oil. It is suitable for both. I have been using it for over twenty years in various vehicles with no problems.

 

check the back of your glove box, there should be a sticker that states what it is, mine says corporate rear,

 

Just checked mine and it said corporate 9.25 rear type A 3,55 gear ratio not sure what that means pretty sure mine is a open rearend

 

corporate rear is like a true posi, so when you lay into it off the line, both tires should spin, not that one legger you see everyone else do

 

I think the only way to tell is the build sheet.

I have the build sheet code below, and it's a one tire spin wonder.
DRBP Corporate 9.25 LD Rear Axle

For the locking two tire spin out, you need to see the code below on the build sheet, which you have.
DSA Anti-Spin Differential Rear Axle

 

I had to question the Corp Rear idea, I have the same as Dakotaff and the frightful one wheel squeal!

 

DRAS Corporate 8.25 Rear Axle 1 wheel peel deal here as well.

 

have a 01 dak V6 3.9 auto 3..55 gear. i went to a 4.1 and dana/ spicer locker 84852. drive in town only my MPG went from 8-9 to 11-12 MPG.