[aerohead]

* I'm not going to marginalize what you experienced, or any of the other contributors here at 'BORPower', but, at the time you originally posted about nBA, I was already familiar with 'explanations' about turning worn-out engines around, which did not require invoking 'boric acid'.
The same 'explanation' was hiding in plain view in basically every 'engine treatment' manufacturer's literature.
Hence the 'deep-dive' into the past.