hey guys, newbie woodworker here.
I was generally using chain and bar oil substitutes for my chainsaw so far just because its cheaper and I heard there's no problem with that.
However, recently I came across a video on youtube stating it might be a big problem for the saw.
here's the link: https://www.youtube.com/watch?v=APHZi6hYrEE

what do you all think? do you use substitutes or not?