Redline MTL, according to the Mfr, is designed with synchro cone clutch friction properties that are markedly different than its competitors. I don't know if this can be believed or not, but I do know that this product can- and often does improve synchro action for "grouchy" transmissions or transaxles. However, anecdotally, many folks do say a marked change in its behaviour occurs as time goes on. Apparently, substantially more so than most conventional manual gearbox lubricants. I personally have no experience with it, but I have definitely seen this matter reported-on...