For those writing disparaging remarks regarding used motor oil as bar oil. I am curious as to how many have actually used it and found it resulted in issues? Disclaimer: I do not utilize used motor oil in any of my chainsaws and I do not recommend it.
That said, I have cut a lot of wood using used motor oil as the bar lubricant and to be honest never encountered any negative results from using it. ie, never had an oil pump go bad, never had a bar wear out prematurely and it certainly didn't impact the chain sharpness.
The primary reason I don't use it now is that it is known to the state of California that used motor oil is bad bad bad. Thus I don't want to be breathing in the mist generated by a chain swirling around and slinging it off. It's also messy and most importantly, it may offend some of the tree huggers. Not only that but I save all my used oil to use as mosquito control on a small lake nearby.
yea, I tried it about 30 yrs ago in a Homelite 360 and plugged up my oiler. Now I drain the oil from my F-250 and put it in my '91 F-150 where I think it also becomes mosquito control