Hello Bob,
Thanks for your research on that topic . I have since been told of a product called INOX . It was developed by a chap in Brisbane and it is available at one of the major retail bearing suppliers , they seem to be the agents for it .
Apparently INOX is very good as a penetrant , much better than CRC WD 40 .
I did a web seach on INOX and found the parent company in Brisbane . I am hoping to try it out soon on a few old rusty studs .
Mike Kelly

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