I did find it on my lawn....

I come home from my last appointment of the day, I see what looks to be a
plastic quart bottle of oil on my lawn.
So I'm a little confused (a little more than usual anyway), because I did
not throw anything on the lawn and it is way to far from the road.
OK, I figure as I walk towards the container, it must be a full bottle if it
was thrown from the street as it is a good eighty feet from the street.
I pick up the thing and it's empty? I read the quart container and it says:
OIL W 100
Aviation oil for aircraft piston engines.
I have tried throwing it, I can get 30 feet at best.

do you think it fell out of a plane or is this oil used for something else
too?

Clark