One thing to consider is; it does not have to be an all or nothing proposition. You can always cut the bar and chain oil with used oil and get a little tack at half the cost. Or if the heavy metals of used oil bother you, just buy the cheapest oil out there, hydraulic oil. This time of year hydraulic oil has a nice viscosity and has better lubricity then used oil.
As for the big trucks...I could never figure this out. If you look at people going down the road, 95% of the time they are driving alone. YET there are times when you need more seats or more room to haul stuff. To me the simple answer would be to make modular cars and trucks that you could connect together to make bigger ones. Just going to work by yourself? Grab the first segment and drive it to work, but if you need a bigger one, put two together so you could lug around the family, and so forth. For trucks you could get incredible capacity just by adding the modules you needed to haul what you needed. Just need to grab that generator from camp, have a module about the size of a Suzuki Mini-Truck to go get it, but if you need to move your Kubota Tractor, put 8 truck modules together so that you could haul the tractor. You guys get the idea. This is not a new concept, we used this at the shipyard, sometimes moving tiny parts of the ship, while other times we moved 6000 ton ship sections...and that is not a misprint. With computer technology, these modules could be plugged together so that they could talk to each other for power, steering, braking, etc. The best part is, you would not need all the modules you needed all the time, you could rent (or borrow them from your buddies) them for that occasional big job, but only would need to rent the size and power required. In that way you could couple your series of truck modules together for the equivalent of a 1 ton truck, then borrow from two buddies their modules, to get a 3 ton capable truck. But best of all, these modules would only consume fuel for the size required, saving the USA a lot in fuel costs and all without sacrificing the freedom of individual destinations, or having something sizeable to do something with.
I would think if they went that route, it would be easy to tell if it was used oil and I would think used oil of any type would be forbidden, back to the heavy metals delimma. Do I want a law, no. Would it be enforceable, of course it would.
Hold off buying a couple cups of coffee and get your years supply of bar oil with the money. LOL It's fractions of a penny per btu.
The problem I have...I use Poulan black gallon bottle Bar Oil - $7.97 at WallyWorld. That stuff is so DARK, it looks like used motor oil. Embarrassing when a saw buyer asks if used motor oil is in there. I say "No! Dammit! Here's the jug." I really gotta get to TSC and try their cheapo stuff.
Why is it that people take the power strokes out and replace them with Cummins and IH's, ,,,,,,,,,, I have never seen a power stroke swap and even Ford goes to Cummins on 450's and up the same Cummins that comes in Dodge pick ups standard equipment.
But bar oil is petroleum oil so we are still polluting the environment just as much as if we used used motor oil. Also, what are the additives that make it more sticky, they could be harmful to the environment as well. I just don't follow your argument here that bar oil is better for the environment than motor oil.