Expert! Er, no.

Used them, yes. Installed on an SRX 600, a MZ Tour, a BMW 650 Funday and a Bros 400 V-twin.
Make sure the vacuum hose taken from the inlet 'tap' for carb tuning (measures vacuum in carbs) is a good seal and that there are no kinks in the tube.
Fill the oiler using either Scottoiler oil, EP80 gear oil or chainsaw non-fling oil, winter grade (less viscous, not vicious!) than the summer grade or a cheap semi-synthetic car oil. I use any of the first three. Scottoiler oil has various corrosion inhibitors that other oils may not have.
Then turn the flow adjusting dial on the top of the oiler fully clockwise, to 'PRIME', insert the hollow bung in the filler hole and connect the tube from the oil bottle and without dispensing more oil, pressurise the oiler so that the oil is forced through the delivery tube until purged of all large air bubbles. Return dial to ~#5 setting, then remove oil bottle tube and reconnect vent tube.
The amount of oil delivered to the chain depends upon oil viscosity (hot weather, thin and runny, cold weather, thick and sticky). The size of the hole in the end of the delivery tube, I use a slanting cut , rather than straight cut across the tube. And the size of the vacuum pulses created by the volume and duration of the vacuum pulse as the mixture is drawn into the cylinder. Literally, "Suck it and see"!

On #5 the SRX only delivers oil when sitting at 3½K RPM or above, whilst the BROS on #5 delivers from about 3K and because the RPM @ 70mph is 2K greater than the SRX, the pulses are more frequent and more oil is delivered to the chain. So you need to reduce the dial setting to ~#3.
The alternative is a small sqeezy bottle containing oil and with a tube delivery system to the chain al la 'Loobman' [
Loobman], you just have to rember to give it a squeeze.

Or else, the toothbrush and jar of jollop at the door applied to the inside of a hot chain on your return. A little graphite grease or dry graphite for lubricating locks, mixed with the oil, adds to its efficacy.
'Lynklife' in the 'boil on the stove' tin used to be a favorite, but you need to be on very good terms with the kitchen holder!

I still have a tin for high days and holidays and non-'O'ring chains, the 'O'rings don't like being boiled!

If you should need a copy of the instructions for the Scottoiler I think that they can be downloaded from their website [LINK:
Scottoiler_tech_support] and they are very helpfull if you give them a call, pers comms with ANOther.
In lube, Bill