BLO (boiled linseed oil) is water resistant but not water proof.

Here is something I just happened to see. Floor polish:
https://www.motortrend.com/how-to/retaining-that-patina-finish/

I'm sure you are aware that the ultimate solution is automotive clearcoat.


"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."