Oil reservoir

My wife says this is the best thing I have ever designed.

I designed this to make oil draining from bottle easily and keep bottle clean, prevent oil drops around bottle.

Also, it let you fill the bottle easily like a funnel.

Its designed for bottle inner diameter 23mm.

Collar is flexible and 24.5mm diameter which means fit into 23mm a little tight.

You can scale it up or down to fit other sizes of bottles.