Looking for recomendation for LSD rear diff (1 Viewer)

[bobNoobie]

Hi I got some regular GL-5 75w90 gear oil. and then I realize my truck has LSD rear diff.

what is the unanimous Limited slip fluid to use on 100 series rear did w/lsd and where to get them locally?
or what LSD additive to get and where?

I found two additive here. but it didn't say how much to add?

https://www.napacanada.com/en/p/CRL742508

CRC Posi-Trac Limited Slip Gear Oil Additive, 207-mL | Canadian Tire

CRC Posi-Trac Limited Slip Gear Oil Additive is designed to quiet chattering differentials and improve gear oil performance | Canadian Tire

www.canadiantire.ca

thanks