Why dont you just keep a spare bottle in the truck for such an occasion?
I dont think there is a whole lot of other products that would be an equal substitute for bar oil.
Old saw makers used to specify SAE 30 wt motor oil. My friend uses 100W Shell oil, don't remember what exactly. Just don't use any used motor oil. I think the biggest thing that bar oil has going for it is its ability to stick.
These other guys are right about manufactured products but in a pinch, bear grease refined over a coffee can heater will work. Also makes your saw smell vaguely like bacon.
What happens if one runs out of 2-stroke mix while in the woods?
And what additives do motor oil contain nowadays that makes it an environmentally bad choice?
We always have an equal amount of bar oil per gallon of mix, never ran short yet.
I'm not questioning any percentages or time frames. My statement was that I personally have seen motor oil ruin a bar sprocket within an afternoon of steady bucking. Plus I don't like to see a thread end just because Rocky says so.
Nothing but bar oil for me, mainly because of the tacifyability of it.
In fact, bar oil has so much taciness that I have a 5 lb. glob of it hanging of the bar tip at the end of the day, just like so much parafinated, hydrogenated motion lotion.
John
Beaver squeezins work well too, just as bentonite clay in demin water at a ratio of 500ppm. Gotta be demin because hard water causes increased bar wear. Speaking of bars, water`s not a bad mixer for other things.
Here’s a product that I have tried out on my engines (4 stroke only) it works great to add some extra protection to bar oil also when making that heavy cut. you can actually reduce oil flow when using this also. DTM
In 25 years of chain saw use, I've used one gallon of bar lube.
Used motor oil-stinky dirty but no more wear than normal
Motor oil-seasonally adjusted to the same weight as in crankcase
Hydraulic fluid-changed out the hydrostatic in my front end loader and ran the oil through the saws
Veggie oil-only during summer-too thick when its cold
My bars haven't worn out. I have two 335's that are four years old with original bars. I can't remember when I even put on a new tip. Excessive wear because of not using bar oil is a load of rubbish in my estimation.
In a pinch, I'd reach into the tool kit in any of my vehicles and get out one of the two quarts of oil that are there for emergencies. The oil is there, along with jumper cables.
Tom
PS Now that this subject is up, we can bring up the bi-annual pole saw/pole pruner rant over on Tree Climbing
Tony, it's not only a word (and spelled <a href="http://www.dict.org/bin/Dict?Form=Dict2&Database=wn&Query=optimal">correctly</a>), but it's the possibly the perfect one for the situation; and yes, Brain obviously nailed it.
Just remember that motor oil lacks the tackiness and runs out faster so if your saw is set to run a tank of gas with tank of oil you'll come out short on oil and this is not good for the bar and chain. Check your oil tank before you run out of gas, it may be empty first. Brake fluid is a NO! NO! it will swell up the rubber and sythetic parts it touches.