Differential Lubricant - 96 Z28

I need to change the differential gasket on my 1996 Z-28. Naturally, I will also drain and replace the lubricant, however, I cannot find anywhere in my Haynes manual where it tells me the type of lubricant to use. Can anyone tell me what type of differential lubricant to use?

Thanks,
Greg

I guess I should have read the owner's manual prior to posting my first messgage. I read it, and it gave me the type of lubricant, however, the type of lubricant depends on the type of differential - regular or limited slip. So now my question is, can anyone tell me how to tell if I have a regular or limited slip differential?

Thanks,
Greg

you have LSD. not reg..assuming its the original.

It is the original. Thanks

Greg