**Dear Heloise:**
I spray cooking oil on my lawn mower blades to keep grass from sticking to them.
I avoid using motor oil because it can harm my grass if it drips onto the lawn.
https://www.unionleader.com/news/human_interest/heloise-unsticking-grass-from-lawn-mower/article_9c3bd768-cc62-4567-868e-0465277d1149.html