The tack factor... can someone help me here? I was using my blend on some very large stuff today. I had plenty of lube on the chain. I can’t grasp how it helps really. I guess I get it. How bout all the canola oil lovers.
I think the tacky thing is a marketing trick to scare people into purchasing bar oil!
In my area 1 liter of bar oil costs 2-3$, fuel is cheaper at about 1,6$.
Oregon had, maybe still has, an emulsifying bar oil - their claim was the evaporating water helps keep the B&C cooler (or something like that, haven't seen the stuff advertised anywhere for a while).
Around my area regular B&C oils seem to have a viscosity of 160-200.
That works fine in the summer heat, but in the winter it barely creeps out of the can, lest gets pumped in sufficient volume to the B&C.
What bar oil is best?
The one that accommodates Your cutting style!
If You are constantly utilizing Your saws spikes, You might be best served with thick tacky oil because You are causing increased friction and heat between the bar and chain.
If You keep Your chain sharp and let it and the saw do their job, You will be perfectly fine with any kind of oil - even thin hydraulic oil will work.
Does used engine and/or hydraulic/ gearbox oil work?
Sure, but it's messy if it is really used up engine oil.
I got a liking of heavy duty industrial gearbox oil, but I will use what I have and/or whatever I can get easily and cheap.
This is another one of those topics where everyone has his/her own opinions and preferences.
Each to his/her own!