Question about redline 75w90

[Herr Faust Schinken]

Not all do.

Buy lubro moly 75-90; no lsd additive unless you put it in

Gearboxes run 75-90 and do not want a lsd additive inside

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But don't 75-90 gl5 non LSD fluid normally tell you that they there not supposed to be used in LSDs

[aquaman86]

anybody have any update on this? from all the searching i've done i still can't seem to come to a conclusion...

i have a '86 325es with a 2.93lsd and 5spd transmission. At first I was set on buying the cstrol syntrax LSD 75w-90 for the rear diff and then a regular synthetic 75w-90 (valvoline synpower 75w-90?). but based on more things i read the less clear it becomes...

for the 5 spd g260 transmission, would you recommend using the valvoline synthetic 75w-90 gear oil? but the bottle itself states it has lsd additives...

Here's the product description for the valvoline synpower 75w-90:

"Valvoline SynPower® Full Synthetic Gear Oil is formulated for ultimate protection and performance. A thermally stable, extreme-pressure gear lubricant, it is designed to operate and protect in both high and low extreme-temperature conditions. SynPower Gear Oil is specially recommended for limited-slip hypoid differentials and is compatible with conventional gear lubricants.
Maintains excellent low temperature fluid protection down to -50°F (-46°C)
Provides outstanding thermal stability for cleanliness and longer service life
Contains special additives to assist in protecting gear teeth from rust and corrosion and reduce chattering in limited-slip differentials
Recommended for (conventional and limited slip) manual transmissions where an API GL-5 or MT-1 fluid is specified"