I tried canola oil on a saw I’d sanded to remove some rust. It was all I had on hand and I imagined it a good short term solution since I thought it would only be a short time before I resumed working on the saw. Life got in the way and it dried to a hard finish which then became a hard film after a few weeks. It’s not a good thing, it becomes gummy when you use the saw and is the very devil to remove. I hope hot vinegar will take it off so that’s my next chore.