Oh dear, Oh dear ! My head hurts !

Here in the UK model diesel fuel contains paraffin as the main energy component.
Kerosene is, as far as I know, not used in the U.K.... not in general use anyway.
It may well be that the aviation industry use kerosene.... householders and model diesel fuel suppliers use paraffin !

Apart from use in model diesel fuel, paraffin has been used in oil lamps (thank heavens for electricity) and also in portable room heaters.

Paraffin is also good for cleaning automobile engine components when stripping down an engine.

I (knowing no better) always thought that paraffin and kerosene were virtually the same thing but with different names !

I would NOT dream of relying on paraffin as a lubricant in any sort of engine... yes it may well have some lubricating qualities... I would confine it's use as a lubricant to helping a drill bit cut or some similar purpose.

Castor oil will not disperse into paraffin unless ether is present. The amount of ether determines the amount of castor oil that can be added. Low temperature makes the problem worse. I found that using 25% castor oil needed a minimum of 15% ether content in the fuel, otherwise the castor oil starts "dropping out" of the mix.

Paraffin as the lubricant, or chosen for it's lubricant qualities in an engine ? No way, never!
What slight lubrication properties it has may well help in the final fuel mix. I would think that paraffin's main advantage is it's very low viscosity.

I have seen Americans refer to paraffin as "lamp oil", I guess that is their equivalent.

Straight diesel oil from the garage pump has more viscosity and lubricity than paraffin.

Reg