I have to admit that I have never tried RP ATF but their Gear oils and MTL's stink performance wise compared to Redline and Amsoil so why pay more for them?
RP is just a blender they do not make anything. Mobil has it's own additive company, it own refiner's and oil wells and R&D etc.....Mobil is a true all in one big boy with more backing then RP could dream of.
RP is no different then if I decided to open shop tomorrow bottling my own oils from stuff I bought on the open market or had made for me by someone else. Not saying that their is anything wrong with that since Redline,Amsoil,Castrol all do this but I would never compare RP to Mobil.......THat is like comparing Henry Fords COmpany to some small volume kit car manufacture or something.......Not reall apples to apples. In the case of Redline their head Chemistry / Tribologist used to work for Lubrizol and I think unless things have changed AMsoil has Lubrizol design and build their additive package for them. I hope I am making sense andyou see where I am going?