Automatic chain oilers?

[Wisedrum]

On my W800 I use a chain Scot Oiler, 'cause I had it left over from my W650.
It sometimes work, but I'm not really happy with it. You have to fill it up
with special oil each season, mainly in summer and wintertime.
The worst thing about it is, that it couldn't prevent the chain from running dry
during long rain trips causing some rumble in the secondary drive, which sometimes
may happen on holiday tours.

So I left this kind of automatic oiler out on the CB and instead of it, I lube the
chain with some spray of choice, whenever I feel it is necessary. I also use the spray
on my W in addition to the Scotty, to keep rust away after rain trips and in the wintertime,
'cause my bikes park outside being only protected by a breath active cover
but without a garage or carport.

Wisedrum