Related:
It's 1966. Hood is up, adding a quart of oil to a 1962 Polara 500 convertible (stock engine: 361" 4 bbl. = 305 hp) using a pointed plunger with the curved spout piercing the top of the metal can.
As the pour spout reaches the valve cover breather hole, the base of the can touches the battery positive terminal.
The spark ignites the oil vapor inside the can, which propels the can first at the underside of the hood, it bounces off, then shoots away across the parking lot, leaving 3 people (me, the owner, and the station attendant) and the car sprayed with hot oil.



Generic photo, not the actual car.