Last year I switched to grocery store canola oil to lubricate my chainsaw bar. I add Oyster mushroom spores into the oil so that they are dispersed while I cut. This method was developed by Paul Stamets of Fungi Perfecti and discussed in his book Mycelium Running. There doesn’t appear to be a commercially available product; however, by making it myself at close to the cost of conventional petroleum-based bar oil (~$15/gal), I improve my forest and should have some convenient forage this fall. I am still refining the process of infusing spores into canola oil, but if you are curious to try it, I’d be happy to swap notes.