I thought I would share one of my $ saving tricks. Many may be doing this already. It's my turn to give a little back to this community as you all help me alot. I have only been here a week. I use my used motor oil out of our vehicles for chain oil. I even have a chainsaw mill were I run this oil in Husky's 3120, with a 36 inch bar. I get the best bar life with this oil. My chain stays cool and lubed up even when cutting 16 foot timbers on my mill. I have not purchased bar oil know for over 10yrs. Your all probally doing this already, just though I'd share a money saving tip. It does not need black streaks on the wood. I run a Duramax and my wife a VW TDI, thats were most of my used oil is coming from so it's black oil coming out of those engines. I don't even bother to filter it or clean it, out of the engine then into 4L oil jugs and out to the wood lot.