Water Pump to Fan Anti-Cease Compound?

[Dennisfly]

There have been several instances in our club where it was extremely difficult to separate the newer aluminum two blade fan from the stainless steel water pump shaft. I found this information on the Albany Fasteners web site:


"For the rest of our post, instead of referring to anode and cathode, we will be using the example of aluminum (anode) and stainless steel (cathode). When aluminum and stainless steel are used in an assembly together, the electrons from the aluminum will begin to transfer into the stainless steel. This results in the aluminum weakening. This weakened aluminum causes it to deteriorate at a much faster rate. This can lead to an extended life of the stainless steel. Note: Aluminum, if left on its own with the electrolyte, will still lose its electrons eventually, but having stainless steel present will significantly speed up this process.
The galvanic corrosion practice is actually commonly used in plating to create a sacrificial layer on top of another material. Zinc plated steel and black oxide are commonly used examples."


While there is much more discussion and many more variables involved, my question is: Would it be prudent to use some anti-cease compound when installing the fan on the water pump shaft?