And as to why Redline lightweight shockproof? Simon at PPG in Aussie land suggested it to Andrew at www.gearboxtech.com
and he tried it out. After seeing the results, he convince me to try it. I did a full swap just before my cruise and was able to normally downshift into first gear at 25MPH, which prior to the fluid change, was a pipe dream for me. How Uncle Scotty chose it, I don't know, but I suspect that it's the key in the Cocktail. Not even Simon at PPG knows why it works so well with Subaru trannys, but it sure does.