What is bar oil exactly? All I remember my stepfather using since I was 4 years old and still uses today is generic motor oil, Saw does tonnes of work and maybe went through a chain/bar every few years.

We mainly used to cut firewood as we had 120 acres of solid bush around the house, we would stack the wood 3 wide for about 50m down both sides of the driveway and as high as it would go. Once that job was done we didnt have to cut any for the rest of the year!