Guys,

Just got an '89 TII with 45,000 miles. I changed the gearbox oil and wanted to change the diff. oil. I've hear contradictory information about the oil to use. The owners manual says that if you have a limited slip unit, you need the special limited slip additive but I heard this was only for the clutch type. I thought the '89+ cars had viscous type diffs and did not need the additive. So.....anybody know for sure? By the way....that statement about the additive was in the owners manual for my '89.

Todd

 

don't need it. the LSD fluid is sealed inside the diff and you can't even change it. you can only change the normal geal oil.

 

are you sure about that? I had it changed (so I thought) by mazcare during my tuneup and replaced with redline synthetic (what they recommended).

I do trust these guys as there the best rotary shop in GA.

 

ya I have redline synthetic in mine. but you just need the normal 75w90 gear oil. adding LSD stuff won't make any diff. it won't even touch the LSD cause it's sealed inside.

 

I spun second gear for 50 feet yesterday. My lsd is working after 150k miles.

 

50 feet? wowie

Sounds like your clutch is working too

 

I see what your saying Scott. The rear diff oil can be changed but it's not the actual limited slip oil that gets drained/replaced, just the gear oil. Thanks for the info. guys.

Todd