> (ie I had some in a syringe, and after neglecting it for sometime in a
> opening-down position, ALL the oil had managed to flow out.  (water
> wouldn't have done that - I was pretty surprised!))

Huh. I don't know if this is a special property. If there is anything that
breaks surface tension at the meniscus on the small hole all the contents
will eventually go out (subject to positive surface tension - convex
meniscus). This applies to water, ink (don't ask) and oil equally well.

The typical example is the cracked tea mug that won't drip when held in
the air and inspected but will make a nasty puddle in a few minutes when
put down.

Peter

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