I just had Agip LSX transmission oil installed during service replacing the Mobil 1. I had purchased, but not installed Red Line NS, but the shop recommended Agip so I tried it. The rationale for Agip was that it is fully synthetic, recommended by the factory, and it helps the second gear issue. The results are that it shifts very much better than Mobil 1 in all gears and especially the shift into second. Chatter is also reduced with the Agip. The Mobil 1 had about 6K miles on it, so I don't know if part of the difference was just new oil versus old. It doesn't completely solve second gear, I need to hesitate briefly into 2nd when cold and it is possible to beat the synchros with really fast shifts when warm, but overall, I am very happy with the shifting. I'll stick with it because it is factory recommended and I don't need to worry about additives or whether yellow metals are melting. My guess (and it is a complete guess) is that Red Line NS is probably better for 2nd gear. The Agip LSX has limited slip additives like the non-NS Red Line, but Agip also makes a SXA version that is like NS -- it probably is also better than LSX for second gear and maybe worse for limited slip chatter. In truth, I don't know how advantageous "factory recommended" is becasue the owner's manual calls for Agip Rotra MP SAE 80W90 -- which presumably is not the same as Agip LSX -- but for whatever reason I feel comfortable with Agip.