There's probably nothing wrong with using black, thick crank lube in a saw who's chain is dull, sagging and stretched already. Lol
Any oil is fine as long as it's clean. Hydraulic is my favourite cause it's the cheapest and is a high grade oil.
Don't be duped into the tackifier thing, it's just a sales pitch to sell bar lube.
If bar lube had any tackifiability, there'd be a 2 pound glob hanging off the tip of the bar.
Reason it out for yourself, most oil tanks are mounted below a hot muffler and once the oil is on a warm bar and chain, any tackifier is soon brought into the same viscosity of any other oil for the purpose it's intended for.
This has been hashed out many times before, however, I so happen to be right. Lol
Gypo