<p>Whilst looking to fix a different problem I had I came across this video.</p>

<p>It's a filament reel holder, but at 02:40 the person uses a mysterious fluid.  I haven't seen anything like this before (though had wondered).</p>

<p><a href="https://youtu.be/X6ArZeWYSZE" rel="nofollow noreferrer" title="Mystery cleaning fluid">Mystery cleaning fluid.</a></p>

<p>What practical problems would this cleaning fluid mitigate?</p>

[{'answer_id': 7910, 'author': 'Trish', 'author_id': 8884, 'author_profile': 'https://3dprinting.stackexchange.com/users/8884', 'pm_score': 2, 'selected': False, 'text': '<p><a href="https://i.stack.imgur.com/gMDDx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gMDDx.png" alt="enter image description here"></a></p>\n\n<p>That\'s a filament cleaner/oiler combo. The black bottle is a variety of machine oil. </p>\n\n<p>The effect of oilers on prints is heavily disputed in the community. The suggestion of plant oils is a very bad one as they can create residue that stays in the hotend and create clogs.</p>\n'}, {'answer_id': 7925, 'author': 'avc', 'author_id': 10524, 'author_profile': 'https://3dprinting.stackexchange.com/users/10524', 'pm_score': 0, 'selected': False, 'text': '<p>For really long Bowden tubes, some people use Teflon lubricant in a cleaner bead.</p>\n\n<p>Never used it myself, since I use a small tube my printer with the stepper on top of one of the Z axis steel rod mounting plates (Anet A8).</p>\n\n<p>Off topic, but by cooking and being a vaper, I vouch that organic compounds leave gunky residues on hot surfaces/parts.</p>\n'}]
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