Yup I use steel ones for the 7 1/4". I like the little dropper bottles, as I find it easier not to miss, but if they are gonna break down after a year or so, it's gonna be expensive in steam oil. Luckily I had this one in a zip bag so could recover most of the oil.
I bought a nice Stanley tool-box for a caddy this morning. Just getting orgy-nised for starting to coal fire.