The RDG and Amazon ones are almost guaranteed to be the same as the AliExpress ones, so will be the same or similar in performance and quality.

If you aren't happy with the possible risk, there's always the tried and trusted AdamsLube.

i bought a large one for my hendry ford first engine build, quality is ok for the price and drips ok on testing. gary

Frankly, I don't think they are worth the trouble on a small lathe in intermittent use. They are just a distraction from making things, and you have to remember to turn them off when you finish. I have had two plain-bearing lathes with simple oil cups with wick feeds, and it is no bother to top these up with an oilcan as required.

Of course, Old Muggin's here has a bag full of them

They need a bit of work in the throttle if you want it to shut off.

The top spring thing that uncovers the fill hole and holds the drip adjust wherever you left it, is a steel stamping with sharp edges so nothing about it is easy.

The screw thread at the bottom was not something I had in my collection of taps and dies.

What about those digital oilers with the interval and duration timers? Somebody stop me

Be aware that some of these oilers are made from steel pressings and brass plated,no problem with lathe lubricators as they are rarely polished when cleaning the lathe,though when used on stationary engines and polished regularly the brass plating soon disappears.

I took a punt on one of these a week ago, it arrived today (from a uk supplier?) cost £9. It is listed as 14mm thread, no good for the Myford – too big, but I expected to make an adapter, easy enough as the pic shows BUT

here's the shock

I unscrewed the original fitting with the sight hole and same for the leaky myford one – sight plastic cracked – and to my great surprise the old Myford fitting screwed straight on to the new oiler

So refitted, all done and dusted in 10 mins and drips as needed

What a result

cw £30 ea from ykw

So I have immediately ordered a second one

Its not often something works out like this

hope this helps

OBTW  FYI

looking closely at the original myford oiler and its thread socket, i thought it was a bit small for 1/4 BSP and sure enough it turned out to be 3/8" BSP 28 tpi, quite a lot finer than 19tpi as above core 0.32 id and od 0.379 thats my old ML7. bit it didnt matter as i reused the old adapter

Edited By brian jones 11 on 07/08/2021 10:25:33

Brian – I think the thread that you're struggling with is actually 1/8in BSP – the usual figure given for the od is 0.383 in. x 28 tpi. It's a fairly common thread, even my cheapo tap and die set included it.

Both new oilers in place, great improvement on old ones which leaked and didnt drip properly