That's why I mentioned above as well that the triflow and super lube products didn't look viable. But there has to be an alternative if Singer insists on changing / reformulating or even discontinuing the lube. Maybe Petroleum Jelly is the only option, but I suspect there are others too. Petroleum based, for low "flow" or melt temperatures, but something....
That said, looking at the number of wicks I've pulled out in the last year,... I don't truly think the wicks work that well. I've had about a half dozen wicks that were "wet" on the top, with a crust of lube above them, and dry and white on the bottom, looking like they've never seen lube...
yet their armatures sure said they'd seen a lot of use.
Says a lot for the resilience of the motors that they live through that.
Nowadays, I replace the wicks, make sure that there's a little grease at the bottom, "soak" the wicks in grease (add grease, roll them around in my fingers til they're saturated), install them, then do the 5 second squeeze thing that Dave McCallum recommends with the featherweights.