Used motor oil is free.
Just doesn't last as long.
LPS-3 works AWESOME ... so if this stuff is better, then I'm sold already. $42/gallon sounds cheaper than LPS-3 by quite a bit. I paid $13 for ONE CAN ... and that was 5 years ago!
Stuff probably just smokes a bit when you fire up the car. No biggie. Can't be any worse than the smoke trail I leave with motor oil on the cats.