In the 90's we'd add a GM lubrication additive to transmissions...it instantaneously improved shift effort and we joked about it being whale jizz...turns out it isn't...and is.

https://www.loandiscount.store/product/Gm-1050081-1965-75-No... DESCRIPTION GM# 1050081 1965-75 NOS POSI LUBRICANT QNTY 2 QTS ALL GENERAL MOTORS REAR HYPOID GEAR POSI LUBE EARLY SUPERIOR MIX WITH WHALE SPERM CHANGED TO 1052271 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975