My 200ml tin of 3-in-1 that I must have bought about 20 years ago has finally emptied.
It still has the label of the local 6-shop hardware store showing a price of 2 Pounds 29p, but it also has the wd40 url in very small print, so I must have bought it after 1995, when wd-40 acquired 3-in-1.
I went into Robert Dyas to get a new one and it is now in a nasty plastic container and costs nearly seven pounds !, so I wandered along to the Poundshop and bought a 100ml aerosol of 3-in-1 for One pound 50p.
Since 3-in-1 is an oil I wonder how the propellant affects it ?, but at least is in a metal can, unlike the non-aerosol version.
I suspect the plastic container would turn brittle long before I used all the oil anyway.
The containers are now also boldly marked with WD-40, who bought the company in 1995 (but that fact had escaped me).
I see that singer sewing machine oil is still on sale. I wonder if it is a better product for general lightweight oiling ?.