Flash rusting is not caused by vinegar nor Evapo-Rust.
It is caused by humidity (moisture) in the air attacking the newly cleansed ferrous metal of the tank.
MMO to prevent flashing was a suggestion, not a requirement.
Any thin, mild lubricant that you can fully coat the inside of the tank with will suffice,
Something such as transmission fluid or light oil reduced with kerosene.
Then just rinse the tank out with gasolene before using.
|