Originally Posted by
John TenEyck
Yes, that's right. You drill a hole in the bar such that the edge of the hole just breaks into the bar slot. You can use a Dremel tool or tiny file to open up the hole in the slot if needed. Now take a 5/16" machine screw and drill vertically until you reach the top of the head, then drill two holes at 90 deg through the side of it at half the bar thickness above the top of the head. That puts the oil in the slot just like the sawhead oiler.
I use Tractor Supply bar oil in the Summer and Stihl Winter oil in the Winter or dilute the TS oil with a little mineral spirits. Don't use it much anymore, however, since I bought a bandsaw mill; only on logs too large for the mill.
John