Most other LubeGard Additives(besides the RED) are to be used in ATF's that *NEED* a "friction modifier" such as DexronII/III and Mercon. The RED can be used with any MFG's proprietary ATF but, probably isn't needed these days. The others such as HFM(Black Bottle) and the Platinum, IIRC, are to be used to help non-proprietary ATF's such as Dex/Merc.
And I could be mistaken as I haven't kept up on LubeGard's fluids lately but, most(except RED) were designed as "friction modifiers" for tranny shops so they wouldn't have to stock every MFG's ATFs and could add one of LubeGard's fluids to DexIII/Merc. To help tranny shops keep their in house costs lower!
Again, a little research on the International Lubracants Inc.(ILI) web site, the makers of LubeGard, will tell you all you need to know about their products. But, keep in mind that the web site is designed to sell their products.
Now, much of this has changed in the past decade as more and more ATFs on store shelves carry the "multi-vehicle" labeling and has made LubeGard a bit obsolete. But, this isn't to say that LubeGard is a bad additive, just not needed any longer since newer ATFs have become more available and some(not all) car dealers are reasonable on their prices for "MFG specific ATF's".
Oh, and I'd like to say...That adding LubeGard HFM or Plat to an already MFG specific ATF could in fact overdose the ATF with too much friction modifier, causing tranny slippage. This is why these additives are designed to be added only to(and I could be wrong) DexronIII/Mercon or the like ATF's, not added to MFG's proprietary ATFs or Multi-Vehicle ATFs, as these already have the proper amount of friction modifier in them.