Tinker:
You've taken me way too seriously, my friend!

Did you miss the little picture of the Aussie Bear (Koala) on the label! They eat only gum-leaves, so I'm sure that rendering down their body-fats would produce a fair quantity of eucalyptus oil!
They are totally protected wildlife of course.

Yes, eucalyptus oil makes a fine antiseptic, and isn't half bad for cleaning back a dark oil finished stock.

As a patch lube it would be a disaster I'm sure!