Safest Rust Remover or Evapo-rust or ??

[70 copo]

Sainte-Thérèse Assembly had a QA area called the "Knot hole" where the entire car went through a series of QA/QC checks at the factory. One of these checks was a hi pressure water bath conducted after the drive train was installed. This test checked for water in any places where it would have been a contaminant in normal operation. The down side is the resultant flash rust on every bare metal part.

I wanted to return the chassis to a point prior to the water bath in appearance.

I carefully removed the brake line tag first and draped the rest.

Using safest rust remover as a shower bath: