The 20R was a 2.2 liter (2189cc) single-overhead cam (SOHC) design, using an aluminum alloy cylinder head with cross-flow design to reduce premature fuel vaporization (surging) and percolation (flooding) in hot weather.
Time to learn more about Bessie’s engine.
If an oil puddle is found on the factory floor, most companies would quickly get someone to clean it up before it causes an accident. At Toyota, they would quickly get someone to place warning cones and tape around the puddle, and then they would figure out where the puddle came from. Was a leaky forklift parked here? Does one of the pipes overhead have a leak? Is a nearby robot flinging a few drops of oil from it’s joints every minute? The oil puddle is a sign of a problem somewhere else, possibly a more important one, and you don’t clean it up until you’ve figured out where it came from and fixed the cause.