Sure did look at your pictures Jim, not ignoring your offering, but I didn't see any plunger associated with them like the chevyman was describing. I thought he might have found something that was different than what you found. Your oilers are just fine for just that, oil in an aerosol can, but I don't see how it would work for a parking brake cable to get grease through the housing. A clutch cable and a parking cable are similar, but not the same.
In an attempt to make a cable lubricator, I made a tube up in the lathe from 1” alum bar stock about 10” long that goes completely over the threaded end of the cable and clamps around the housing. One end is open where it clamps, the other end is closed with a grease fitting in it. I tried ‘O’ rings for seals at first then a split clamp using sheet neoprene or a seal. I worked for a several days trying to get the end sealed up but the hydraulic pressure of the grease gun just forced the fixture off the housing. The cable/housing was soaked for a few days in solvent and all the old grease was worked out then I lubed about 80% of the cables length with grease or as much as was exposed at either end of its travel. The cables pulled through the housing freely but there is still 8” or 10” inches in the middle that you can’t get any grease to.
And that is why I was asking the chevymon, about his, oiler with the plunger.
Denny Graham
Sandwich, IL