Some people caution against using motor oil on a chain saw, but not for safety reasons or concerns about equipment. Bar and chain oil is stickier than regular motor oil, so it stays on the chain longer.

Both types of engine oil are made from crude oil that comes from the ground. The difference is that synthetic motor oils are made from more advanced refining processes and are of a higher purity and quality than conventional mineral oils or semi-synthetic oils.

Improper disposal of used motor oil causes many environment problems as motor oil is insoluble, it is persistent, it contains heavy metals and toxins.