If I find the container then I will give the oil another go, but use your technique as opposed to the ColinJ Sling a litre of it on the chain and moan about the ensuing mess approach.
I did find the container. I had it in my head that it was a huge container, but...
It is only 500 mL! I suppose compared to the 120-odd mL of typical bike lube containers that
IS pretty big. If it works out for me then it will probably last me years and is cheap anyway.
One drop of motor oil on a toothbrush pressed against the rollers. I then spin the cranks 8 times so the entire length of the chain passes under the toothbrush twice. The oil works its way on to the rest of the chain soon enough.
I cleaned the chain on one of my bikes and did the wiping on with a rag trick. The oil was only at about 16-17 C so it was still quite viscous and I did see a few small oil strands as I moved the chain round.
I think I will pour some oil into a jar and warm that in hot water before applying it next time. I had already decided that I would use an old toothbrush to do it, as suggested by
@Chris S and
@Cycleops - great minds think alike!
That bike is the one that gets used most in damp conditions. I'll see how I get on and report back at a future date.