Chainsaw Bar Oil Question

I ran out of bar oil once, so I used some Redline synthetic 90wt gear oil I had left over. My chains began lasting 5 times as long without adjustment to compensate for stretch. It lasted significantly longer before needing to be topped off too.

Impressed with how well it worked on my chain saws, I started soaking my engines timing chains in it for a day or two before installing them. They stopped stretching on break-in too. Been using it ever since.