Reminds me of a tip from pre O-ring days when chain lubrication was putting the chain into a pan of grease that had to be heated up so that the grease ran into the chain rollers.
I remember reading a report of a race mechanic in the 1960s who would first boil the chain in water and then put the chain into the heated pan of chain grease. His logic was that in boiling in water the gaps in the rollers would first be filled with water. When that chain was then boiled in the chain grease the higher temperature reached would expel the water causing a vacuum that would then be filled by the chain grease on cooling.
tom